177 free online tools. No sign-up.

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 two texts side by side. Highlight character, word, or line changes and download a private diff.

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

Write Markdown and preview the rendered HTML live.

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.

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 1 to 100 random version-4 UUIDs at once, using your device's cryptographic randomness.

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

Get SHA-1, SHA-256 and SHA-512 checksums for a file, then paste the expected value to confirm a match.

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.

Converters

Convert between data, color, and image formats.

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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.

Developer Tools

Format, validate, and test code and expressions.

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.

PDF Tools

Merge, split, and extract from PDF files.

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Merge PDFs

Combine multiple PDF files into a single document.

Split PDF

Pull the pages you want out of a PDF into one new file — type single numbers or ranges, such as 1-3,5.

Extract Text from PDF

Pull the selectable text out of a PDF to paste elsewhere. It reads the text layer, so scans give nothing.

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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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

Inspect and compare pasted HTTP response headers locally, keeping repeated fields and response blocks.

My IP & Geolocation

See your public IP address and its approximate location.

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Calculators

Everyday calculators for dates, health, and numbers.

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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

A calendar for any year or one month, weeks starting Monday or Sunday, ready to print or save as a 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.

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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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.

Currency Converter

Convert between 160+ world currencies at live exchange rates.

Crypto Price Tracker

Live prices, market cap, and 24h change for top cryptocurrencies.

Weather Lookup

Current conditions and a 7-day forecast for any city.