299 free online tools. No sign-up.

Unicode Normalizer

Normalize Unicode locally with code-point comparisons and clear NFC, NFD, NFKC and NFKD choices.

Line Ending Converter

Convert UTF-8 file endings between CRLF, LF and CR, with final-newline and BOM controls.

Subtitle Time Shift

Shift SRT or WebVTT by exact offsets, refusing negative times instead of clamping.

URL Extractor

Extract HTTP(S) links from text or saved HTML locally, count repeated URLs and export source locations.

Compare Two Lists

Find shared and unique list items with explicit matching options and local text downloads.

Word & Character Counter

Count words, characters, sentences, and paragraphs in your text.

Case Converter

Convert text between upper, lower, title, camel, snake, and kebab case.

Text Diff Checker

Compare text, export unified diffs and preview exact forward or reverse single-file patches locally.

Lorem Ipsum Generator

Generate exact placeholder counts with a repeatable seed and text, HTML or Markdown exports.

Slug Generator

Turn any text into a clean, URL-friendly slug.

Text Sorter & Deduplicator

Sort lines alphabetically or numerically and remove duplicates.

Markdown Previewer

Open or write Markdown, preview it locally, build a heading outline and export Markdown or sanitized HTML.

Text Reverser

Reverse characters, words or lines while keeping emoji intact; import and download TXT locally.

Text to Speech

Read text aloud with local voices, section progress, pause and adjustable speech speed.

Find & Replace

Replace every match at once, with case-sensitive, whole-word or regex options and a count of replacements.

Whitespace Cleaner

Remove line breaks, extra spaces, and tabs from text.

Word Frequency Counter

See which words appear most often in your text.

Remove Accents

Strip diacritics from text — turn café into cafe.

Stopwatch & Countdown Timer

A stopwatch with laps and a countdown timer with alarm.

Encoding & Crypto

Encode, decode, hash, and generate secrets.

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JSON String Escape

Escape text to one JSON string or strictly decode it, preserving embedded text and numeric IDs.

Base64 Encoder & Decoder

Encode and decode text or files with Base64, Base64URL, data URI detection, preview and download.

URL Encode/Decode

Encode or decode URL components, full URLs and form values with correct %20, + and %2B handling.

HTML Entity Encode/Decode

Encode or decode HTML entities using named, decimal or hex forms, including the full HTML5 entity set.

Hash Generator

Hash text or hex bytes with SHA algorithms, compare an expected digest and download results.

JWT Decoder

Decode JWT claims with exact numbers and expiry times, without verifying the signature.

UUID Generator

Generate up to 1,000 UUID v4 or v7 values, inspect versions and timestamps, and download TXT, JSON or CSV.

Password Generator

Generate strong, random passwords with custom rules.

Hex / Binary / Text Converter

Convert UTF-8 text, hex and binary in six directions, validate input and download original bytes.

Morse Code Translator

Convert text to Morse code and back, with audio playback.

Caesar Cipher / ROT13

Encrypt or decrypt text with a shift cipher, including ROT13.

HMAC Generator

Generate and verify HMAC digests with five algorithms and hex, Base64 or Base64URL output.

File Hash Checker

Hash multiple files locally, verify expected digests and export SHA manifests, SRI values or JSON reports.

Unicode Escape/Unescape

Turn text into \uXXXX sequences and back; by default only non-ASCII goes, or tick Escape everything.

Base32 Encode/Decode

Encode UTF-8 text or hex bytes as RFC 4648 Base32; strictly decode and download exact bytes.

File to Base64

Encode files locally as Base64 or data URLs, compare SHA-256 and download the full text.

Base64 to File

Decode Base64 to a file locally, inspect byte headers and verify the SHA-256 fingerprint.

Base64 to Image

Validate Base64 image bytes and dimensions, then preview and download the original file.

Base64 ⇄ Hex

Convert Base64, Base64URL and hex with strict validation, exact byte counts and downloads.

Text Encrypt / Decrypt

Encrypt text as AES-256-GCM JSON, detect changed messages on decrypt and recover older CryptoJS text.

Text Encoding Converter

Decode supported text encodings and save UTF-8 or UTF-16 with strict byte checks and BOM options.

Converters

Convert between data, color, and image formats.

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vCard Generator

Create a UTF-8 vCard 4 contact file with safe folding and download it locally.

Subtitle Converter

Convert plain SRT and WebVTT locally, with cue previews and no silent metadata loss.

ZIP Creator

Create a ZIP locally with editable archive paths, Store or Deflate compression, and exact file bytes.

JSON ⇄ CSV Converter

Convert JSON arrays to CSV and CSV back to JSON.

Timestamp Converter

Convert Unix timestamps and dates with explicit units, UTC, batch errors and CSV downloads.

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal.

Color Converter & Picker

Convert HEX, RGB and HSL colors with alpha, preview transparency and copy complete CSS values.

Markdown to HTML

Convert Markdown source into raw HTML you can copy.

Image Format Converter

Batch-convert PNG, JPG and WebP, resize images, and control JPEG backgrounds locally.

Image to Base64

Validate an image and export its original bytes as Base64, a data URI, HTML or CSS.

Image Compressor

Compress JPG, PNG and WebP images to a smaller file size — or to an exact target size like 100 KB.

YAML ⇄ JSON Converter

Convert one YAML document to JSON or back with safe JSON-compatible types, indentation and downloads.

CSV to Markdown Table

Turn CSV into a Markdown table — first row as the header, with Left, Center or Right column alignment.

Roman Numeral Converter

Convert any number from 1 to 3999 into Roman numerals or back. Direction is detected from what you type.

JSON to TypeScript

Generate TypeScript interfaces from a JSON sample.

Query String ⇄ JSON

Convert URL query strings to JSON and back.

Number to Words

Spell out numbers in English words, including decimals.

Land Area Converter

Convert bigha, katha, guntha, cent, marla and kanal into acres, hectares and square feet.

HTML to Markdown

Convert HTML markup into clean Markdown, keeping headings, links, lists, code blocks and tables.

Byte Size Converter

Convert bits, bytes, KB, MB, GB and binary KiB to PiB without mixing 1000 with 1024.

SVG to PNG / JPEG

Convert SVG to exact-size PNG, JPG or WebP with contain or cover fit and safe local rendering.

Image OCR — Extract Text

Extract text from a photo, cancel recognition, correct the result and download TXT locally.

PNG to JPG Converter

Convert PNG images to JPG, with control over quality and the background colour behind transparent areas.

JPG to PNG Converter

Batch-convert JPEG to PNG, keep original dimensions or resize, and download images or a ZIP.

WebP to JPG Converter

Turn WebP images into JPG files that open in any app, editor or older device.

WebP to PNG Converter

Convert WebP images to PNG while keeping transparency intact.

JPG to WebP Converter

Batch-convert JPEG to WebP with quality and size controls, compare sizes and download a ZIP.

PNG to WebP Converter

Batch-convert PNG to WebP with transparency, quality and size controls, and ZIP download.

HEIC to JPG Converter

Convert iPhone HEIC photos to JPG or PNG, in batches, without the photos leaving your device.

CSV to Excel Converter

Create a safe XLSX with encoding detection, typed columns, protected IDs and an optional audit sheet.

Excel to CSV Converter

Choose any XLSX worksheet, preserve date-times, audit identifier risks and export private CSV locally.

JSON to Excel Converter

Convert JSON to XLSX locally. Preserve long IDs, preview columns and handle nested data.

AVIF to JPG

Convert still AVIF images to JPG locally, choose a transparency background and download a batch ZIP.

AVIF to PNG

Convert supported still AVIF to PNG locally with transparency, individual downloads and a batch ZIP.

BMP to JPG

Convert supported BMP bitmaps to JPG locally, control quality and background, and download a batch ZIP.

BMP to PNG

Convert supported BMP to PNG locally with explicit alpha handling, resize controls and batch downloads.

ZIP Extractor

Inspect supported ZIP archives and extract files with explicit path, integrity and expansion limits.

GZIP Compress / Decompress

Compress a file to GZIP or decompress a supported .gz file, then download the exact output bytes.

Developer Tools

Format, validate, and test code and expressions.

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SemVer Sorter

Sort semantic versions by SemVer 2.0 precedence and keep original build labels, duplicates and tied order.

Regex Escape

Escape literal text for JavaScript regex and get pattern source, a RegExp constructor snippet or a Unicode regex literal.

Open Graph Generator

Build escaped Open Graph tags for a website with a local card preview and copyable HTML.

cURL Command Builder

Build a quoted cURL command for Bash or zsh. Review and export it without sending a request.

JSON to SQL

Generate SQL INSERT statements from flat JSON records, preserving numeric text, nulls and omitted fields.

URL Cleaner

Remove chosen tracking parameters from URL lists with retained text and a per-link audit.

JSON Schema Generator

Generate a draft 2020-12 schema from JSON examples and check their observed types locally.

.env to JSON Converter

Convert a documented .env subset to JSON locally, preserving strings and multiline values.

EML Viewer

Open a saved EML email as text, inspect headers and export attachments with a SHA-256 inventory.

Binary File Compare

Compare local files byte by byte, review difference ranges and download JSON, CSV or text reports.

OAuth PKCE Request Builder

Generate S256 PKCE values, then build HTTPS authorization URLs and token-request text locally.

Sitemap Validator

Inspect sitemap XML fields, dates, URLs and duplicates locally, without a live crawl.

UTM Builder

Build campaign URLs locally, preserve ordinary parameters and review UTM replacements before export.

Robots.txt Tester

Test pasted robots.txt rules locally against crawler tokens and paths, with winning lines and CSV export.

ICS Calendar Event Generator

Create a local ICS event with explicit UTC offsets or inclusive all-day dates.

JSON Patch

Apply JSON Patch locally with exact numbers, atomic errors and downloadable results.

JSON Schema Validator

Validate JSON with Draft 7 or 2020-12 schemas. Find failing paths and download a private report.

JSON Flatten & Unflatten

Flatten and rebuild JSON with typed paths, exact number tokens and empty containers.

JSON Pointer Extractor

Extract JSON values with RFC 6901 pointers, preserve exact digits and download locally.

JSON Formatter & Validator

Format, validate, and minify JSON with exact line errors, a searchable tree, and private processing.

Code Formatter

Format JavaScript, TypeScript, JSON, HTML or CSS with parser-aware indentation and downloads.

Regex Tester

Test JavaScript regex, inspect capture groups, and preview replacements with a cancellable timeout.

Cron Expression Parser & Builder

Build cron expressions and see their next run times explained.

HTTP Status Codes & Log Analyzer

Look up HTTP status codes and analyze response lines or access logs with counts and explanations.

QR Code Generator

Generate a downloadable QR code from any text or URL.

XML Formatter

Validate and format XML without rewriting attributes, CDATA or meaningful text spacing.

URL Parser

Break a URL into protocol, host, path, and query parameters.

CSS Minifier

Minify CSS while preserving strings, cascade order, custom properties and license notices.

SQL Formatter

SQL beautifier for 20 dialects with keyword case, spaces or tabs, copy and .sql download.

Chmod Calculator

Convert between symbolic and octal Unix file permissions.

JavaScript Keycode Finder

Press any key to see its event.key, event.code and keyCode, plus the modifiers held and auto-repeat.

Mock Data Generator

Generate repeatable test data from a custom schema; export JSON, CSV, NDJSON or SQL.

YAML Formatter & Validator

Format YAML with comments and anchors retained. Validate and download multi-document files.

Barcode Generator

Validate or add GTIN check digits and generate one barcode or a batch label sheet as PNG and SVG.

WebSocket Tester

Test WebSockets with text or binary messages, subprotocols, close diagnostics and log export.

JSON ⇄ XML Converter

Convert JSON and XML locally with explicit arrays, attributes and text while refusing lossy structures.

JSON Diff

Compare JSON by ID, ignore noisy paths and export a strict JSON Patch when the comparison permits.

File Type Checker

Inspect recognized file signatures, extensions and browser MIME without opening or uploading the file.

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PDF Tools

Merge, split, and extract from PDF files.

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Remove PDF Annotations

Remove PDF comments, highlights and supported review markup locally. Keep links, form fields and unapplied redaction marks.

PDF Compare

Compare PDF pages visually and export heatmaps with a difference report. No document upload.

PDF Poster Maker

Tile one PDF page across printable sheets with overlap, trim guides and an assembly map.

Flatten PDF Form

Turn supported filled AcroForm fields into fixed PDF page content, with an appearance audit.

PDF Interleave

Alternate two PDFs with reverse-order controls, an explicit remainder policy and a downloadable page map.

Insert Blank PDF Pages

Insert empty PDF pages at original positions with chosen sizes and a complete page map.

PDF Page Size Checker

Read PDF page sizes, rotations and boxes locally; export a geometry report.

PDF Booklet Maker

Arrange PDF pages for folded booklets with blank padding, binding choice and a sheet map.

PDF N-up

Put 2, 4, 6 or 9 PDF pages on a sheet with paper, margin and order controls plus a page map.

Duplicate PDF Pages

Repeat selected PDF pages, keep page sizes and rotations, and download without uploads.

Crop PDF Pages

Trim visible PDF margins locally. Cropping hides content; it does not redact it.

Merge PDFs

Combine multiple PDF files into a single document.

Split PDF

Split PDFs by page, fixed-size chunks or ordered custom groups, with a ZIP and exact source-page manifest.

Extract Text from PDF

Extract chosen PDF pages as text with page boundaries, blank-page warnings, TXT and JSON exports.

JPG to PDF Converter

Convert images and photos to PDF — one or many JPGs into a single file, in the order you choose.

PNG to PDF Converter

Turn PNG screenshots and graphics into a PDF, one image per page, sized to fit or centred on A4.

Rotate PDF

Preview and rotate all, odd, even or selected PDF pages, then download the corrected file locally.

DOCX to PDF

Preview a Word DOCX locally, then use your browser's print dialog to save it as PDF.

Delete Pages from PDF

Preview and delete PDF pages, or keep only a chosen range. Save a new copy locally.

Add Page Numbers to PDF

Number selected PDF pages, skip the cover and choose the start, style and placement.

Watermark PDF

Stamp text across every page of a PDF — diagonal, tiled or footer — at the color and opacity you choose.

PDF Metadata Editor & Remover

Inspect, edit or remove PDF document properties and the XMP metadata packet locally in your browser.

Text to PDF

Create A4 or Letter PDFs with checked font coverage, wrapped text, titles and local TXT import.

PDF to JPG Converter

Render selected PDF pages as JPG at a chosen resolution; download individual images or a ZIP.

PDF to PNG Converter

Render selected PDF pages as PNG at a chosen resolution; download individual images or a ZIP.

Compress PDF

Reduce a PDF's file size — either losslessly, or by rasterising pages for a much bigger reduction.

Reorder PDF Pages

Rearrange PDF pages locally with thumbnails, keyboard controls, reverse order and an exact page sequence.

Resize PDF Pages

Fit PDF pages to A4, Letter or custom sizes locally, with centered content and clear margins.

Network & Web Tools

Look up IPs, DNS records, and site metadata.

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CIDR Aggregator

Merge IP addresses, networks and ranges into the smallest set of CIDR blocks covering exactly the same addresses.

DNS Lookup

Inspect public DNS records, TTL, resolver status and authority, with TXT, MX, CAA and JSON export.

Website Meta Tag Checker

Inspect a public URL or pasted HTML for title, description, canonical, robots and social sharing tags.

User Agent Parser

Parse pasted or current user-agent strings in batches, explain uncertainty and export JSON or CSV.

IP Subnet Calculator

Inspect CIDR or dotted netmasks, or find the smallest IPv4 subnet for a required host count.

HTTP Header Inspector & Compare

Compare pasted headers and check CORS origins, credentials and preflights without fetching a URL.

HAR Viewer

Inspect HAR statuses, hosts, timings and headers, with filters and deliberately limited summary exports.

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Calculators

Everyday calculators for dates, health, and numbers.

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Normal Distribution Calculator

Calculate normal distribution probabilities or percentile values, visualize the shaded bell curve and export SVG or JSON.

Break-Even Calculator

Find the minimum whole units to cover costs, calculate target-profit sales and compare three pricing scenarios.

Unit Price Calculator

Rank up to eight offers by price per weight, volume or item with multipack and coupon support.

Matrix Calculator

Calculate matrix products, determinants and inverses with exact fractions and CSV or JSON exports.

Binomial Probability Calculator

Calculate point and cumulative binomial probabilities with a full table, chart and exports.

Box Plot Maker

Make box plots from numbers or grouped CSV, with clear quartiles and data exports.

Pace Calculator

Calculate running pace, distance or finish time and download kilometre or mile splits.

Histogram Maker

Make a histogram from numbers or a CSV column. Export charts and audited bin counts.

Weighted Average Calculator

Calculate a weighted mean from value–weight pairs, with normalized shares and CSV reports.

Standard Deviation Calculator

Analyze a list or CSV column with sample/population spread, quartiles, outlier flags and exports.

Linear Regression Calculator

Fit paired data or CSV columns, inspect residuals and estimate values with clear local exports.

Scientific Notation Converter

Convert exact decimals to scientific, engineering and plain notation with explicit rounding options.

Excel Date Converter

Convert spreadsheet serial dates and civil date-times with explicit date systems and row-by-row errors.

Decimal Hours Converter

Convert decimal hours and signed durations in batches with explicit rounding and CSV or JSON downloads.

Week Number Calculator

Convert dates and ISO week dates with the correct week-year, Monday–Sunday range and batch exports.

Fraction Calculator

Add, subtract, multiply, divide or simplify fractions and mixed numbers with exact steps.

Significant Figures Calculator

Count written decimal digits and round with explicit half-even or half-away rules.

Time Duration Calculator

Calculate overnight clock intervals or elapsed minutes using explicit UTC offsets.

Time Card Calculator

Total 31 dated shifts with breaks, overnight ends and overlap checks; export CSV or JSON.

Drywall Calculator

Estimate whole drywall panels from separate surfaces, openings, layer counts and actual sheet dimensions.

Asphalt Calculator

Estimate asphalt volume or tonnage from measured areas, compacted depth and supplier-specific density.

Roofing Calculator

Calculate roof-plane area or horizontal projections with slope, roofing squares and whole bundles.

Stud Calculator

Count studs for separate straight runs with chosen spacing, explicit extras and optional material cost.

Flooring Calculator

Estimate flooring for multiple rooms with chosen waste, whole packs and optional cost.

Gravel Calculator

Estimate gravel volume and optional mass using your supplier's density and order size.

Mulch Calculator

Estimate top-up mulch for multiple beds and compare whole bags with bulk volume.

Brick Calculator

Estimate single-leaf bricks from wall area, openings, brick and joint sizes, allowance and whole packs.

Grout Calculator

Estimate grout and whole bags from tile joints and your product's consumption coefficient.

Concrete Calculator

Estimate slab or cylinder concrete volume and whole bags using your product yield and allowance.

Wallpaper Calculator

Estimate wallpaper rolls using whole drops, trim and straight pattern repeats, with clear assumptions.

Paint Coverage Calculator

Estimate paint and whole cans from area, openings, coats and your product's coverage.

Tile Calculator

Estimate tile quantities and full boxes with explicit waste and metric or imperial units.

Percentage Calculator

Calculate percentages, reverse changes, compound changes and percentage points with a CSV breakdown.

Age & Birthday Calculator

Calculate calendar age, completed months and birthday milestones with explicit leap-day rules.

Unit Converter

Convert length, weight and temperature — mm to inches, kg to pounds, Celsius to Fahrenheit.

Electrical Load Calculator

Build an appliance schedule; estimate demand, kW, kVA, phase current, tariff and load headroom.

Land Plot Area Calculator

Area of a four-sided plot with unequal sides, in bigha, katha, guntha, acre or hectare.

NPK Calculator

Audit fertilizer blends and targets, split NPK ratios, and convert P2O5 to P or K2O to K.

DAP Calculator

Calculate DAP and urea bags, exact application kg, leftovers, nitrogen credit and field coverage.

Fertilizer Calculator

Find a least-cost whole-bag mix for an N-P-K target using your products, prices, stock and dealer limits.

Loan / EMI Calculator

Calculate monthly payments, total interest, and payoff schedule.

Tip Calculator

Calculate a tip, exclude included tax and split every cent fairly with clear rounding.

Random Number Generator

Generate exact random integers with exclusions, no repeats and local TXT or JSON downloads.

LCM & GCF Calculator

Find exact LCM and GCF/HCF/GCD answers with prime-factor and Euclidean steps you can verify.

Volume Calculator

Calculate mixed-unit shapes and partly filled tanks, with diameter input and a CSV calculation.

Grade Calculator

Work out your weighted grade and the letter it lands on, plus the score you need on the work still ahead.

Date Calculator

Add or count dates with custom weekends, excluded dates, endpoint rules and a CSV breakdown.

Printable Calendar Maker

Make year or month calendars for 1900–2200, choose Monday or Sunday starts and print or save as PDF.

Dice Roller

Roll tabletop dice with keep-highest or lowest rules, modifiers, visible rolls and history export.

Compound Interest Calculator

Model compound growth with monthly deposits, clear timing, inflation and a downloadable schedule.

Aspect Ratio Calculator

Read image dimensions, resize proportionally, and calculate fit, crop or anamorphic output.

Time Zone Converter

Convert a time between cities, then compare your own list of them side by side at that same moment.

Pomodoro Timer

Run custom focus and break cycles with elapsed-time tracking, pause controls and a CSV session log.

Plaster Calculator

Calculate cement bags, sand in cubic feet or brass, and plaster coverage after doors and windows.

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Design Tools

Generate CSS, palettes, and resize images.

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Image Dither

Turn an image into a black-and-white dot pattern with Floyd–Steinberg or Bayer dithering. Compare the preview and save a full-size PNG locally.

Image Palette Extractor

Extract representative colors from a local photo and download a reusable CSS, JSON or SVG palette.

Image to ASCII

Turn a local image into character art with a live preview and script-free TXT, HTML and SVG exports.

Gemini Watermark Remover

Preview supported visible Gemini sparkle restoration locally. Invisible SynthID is not removed.

Image Grayscale

Make a photo grayscale with a clear brightness method and a transparency-preserving PNG.

Image Color Inverter

Invert decoded image colors locally while retaining transparency, then download a PNG.

Make Color Transparent

Remove white or a picked color from images, preserving other alpha values in a PNG.

Image Threshold

Convert an image to two-tone black and white, with a threshold and explicit alpha controls.

Passport Photo Maker

Manually crop a photo and make a 300-DPI image, exact-size PDF print sheet and geometry report locally.

Image DPI Changer

Set JPEG/PNG print density without resizing or pixel re-encoding; verify preserved image data.

Image Straightener

Level tilted photos with a grid and fine angle; choose expanded or cropped canvas and export PNG.

Image Compare

Compare same-size JPEG or PNG pixels locally; export a difference PNG and JSON report.

DPI Calculator

Calculate print size or PPI and inspect supported JPEG/PNG density tags locally.

Join Images

Join images side by side or vertically with exact spacing, alignment and local PNG export.

Sprite Sheet Generator

Pack original-size images into a transparent PNG grid and download exact JSON coordinates.

Image Trim

Trim transparent or solid-colour image borders with explicit thresholds and PNG export.

Image Pixelate

Pixelate a whole image or rectangle and export PNG. Cosmetic, not secure redaction.

Rotate & Flip Image

Rotate JPEG and PNG images by 90, 180 or 270 degrees, flip either axis and download a PNG locally.

Rounded Image Corners

Apply a measured corner radius to JPEG or PNG images and export a transparent PNG without uploads.

Image Contact Sheet

Arrange JPEG and PNG images into an ordered contact sheet with labels and a local PNG download.

Image Border

Add measured borders around JPEG and PNG images without resizing the original image area.

Image Splitter

Split an image into grid tiles with no gaps or lost edge pixels, then download the tiles as a ZIP.

Image Metadata Viewer

Inspect supported JPEG and PNG metadata before sharing, without uploading the image.

Image Metadata Remover

Remove JPEG and PNG privacy metadata locally while retaining image data and color profiles.

CSS Gradient Generator

Design linear, radial or conic gradients, test text contrast, preview real UI and export the CSS or PNG.

Box Shadow Generator

Design CSS box shadows visually and copy the code.

Color Palette Generator

Build five-color harmonies, lock swatches, check text contrast and export CSS or JSON.

Image Resizer

Resize images to exact dimensions right in your browser.

Color Contrast Checker

Audit layered text, UI controls and palettes against WCAG 2.2, then apply a safer accessible shade.

Favicon Generator

Turn text, emoji or an image into a tested ICO and PNG favicon pack with a manifest and install tags.

Placeholder Image Generator

Create custom-size placeholder images with your own text and colors.

Crop Image

Trim a photo to the part you want, freehand or locked to a ratio like 1:1 or 16:9.

Meme Generator

Add fitted captions over a photo or in white caption bands, then download a private PNG meme.

CSS clamp() Generator

Build fluid font-size clamp() rules between two viewport widths.

Color Shades Generator

Generate tints and shades of any base color.

Image Color Picker

Pick original image pixels by coordinates, inspect HEX and RGBA, and export local swatches.

Image Watermark

Batch-watermark images with text, a logo or both; tile, preview and export locally at full size.

Screenshot Beautifier

Frame screenshots for sharing, add captions, and cover private areas before a local PNG export.

Online Drawing Board

Sketch, add shapes or text, import a picture, undo and redo, then save a 1200 × 800 PNG locally.

Screen Recorder

Choose a screen, window or tab to record locally, pause, preview and download supported video.

CSS Unit Converter

Batch-convert CSS lengths with separate font, percentage and viewport references; export CSV.

Remove Image Background

Cut the background out of a photo and download a transparent PNG, with the model running on your device.

Remove HDR From Photo

Convert an Ultra HDR photo to SDR. JPG pixels stay untouched; HEIC and HEIF files are re-encoded once.

Data & APIs

Source-linked country facts and UK bank holiday calendars.

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CSV to XML

Convert CSV to XML with original headers, leading zeros and empty strings preserved.

XML to CSV

Convert a selected XML record path to CSV, keeping attributes, namespaces and repeated fields.

Merge Excel Files

Merge 2–10 XLSX files as separate tabs or header-aligned rows with source lineage, all in your browser.

Compare Excel Files

Compare typed cached values in two XLSX sheets and export added, removed and changed cells locally.

HTML Table to CSV

Convert selected HTML tables to CSV with merged-cell options, entity decoding and formula protection.

Markdown Table Generator

Build Markdown tables from an editable grid or CSV, with literal text, alignment and local downloads.

CSV Sort

Sort CSV locally by up to three text or exact decimal keys, preserving IDs and equal-key row order.

CSV Data Profile

Inspect CSV column counts, empties, distinct values and duplicate rows locally; export a JSON profile.

CSV to SQL

Convert CSV to SQLite, PostgreSQL or MySQL INSERT scripts while preserving IDs as text.

CSV Column Editor

Keep, reorder and rename CSV columns without changing cell values or row order.

CSV Sample

Take first, last or seeded CSV samples and download a reproducible selection report.

CSV Join

Match two CSV tables by exact text keys, review unmatched records and download the joined data locally.

CSV Pivot Table

Group CSV records into a pivot table with counts or exact decimal sums, without uploading your data.

CSV Deduplicator

Remove duplicate CSV records by chosen columns, keep exact values and review removed rows locally.

CSV Splitter

Split CSV records into smaller files, preserve quoted line breaks and download a ZIP locally.

CSV Transpose

Turn CSV rows into columns with an explicit header choice and exact text values, without uploads.

CSV Merger

Combine CSV tables by header name, preserve IDs and download the result locally.

CSV Filter

Filter CSV rows, select output columns and download a focused table without uploads.

Country Info Lookup

Find country facts with dated population estimates, source links and CSV export.

UK Bank Holidays

Find GOV.UK bank holidays for England and Wales, Scotland or Northern Ireland; export CSV or ICS.

JSONL / NDJSON Converter

Convert JSONL or NDJSON to a JSON array and back, preserving number tokens and finding line errors.

CSV Validator

Check CSV syntax, row widths and headings without silently repairing data. Download a diagnostic report.