Free Online Tools for Writers, Students & Developers
Browse Tools by Category
Everything is grouped so you can find the right tool fast.
PDF Tools
Combine and manage PDF files privately in your browserMerge PDF
Combine several PDF files into one document, reorder them, and download. Nothing is uploaded.
Use tool →Split PDF
Extract pages or split a PDF by range, every N pages, or into single pages. Nothing is uploaded.
Use tool →Compress PDF
Reduce the size of scanned and image-heavy PDFs with adjustable compression. Nothing is uploaded.
Use tool →PDF to JPG
Turn PDF pages into JPG images with adjustable resolution and quality. Nothing is uploaded.
Use tool →JPG to PDF
Combine JPG, PNG and other images into one PDF with page size and margin options. Nothing is uploaded.
Use tool →PDF to Word
Extract the text from a PDF into an editable Word document. Works best on text-based PDFs.
Use tool →Word to PDF
Turn a .docx file into a PDF with selectable text, using a preview and your browser’s Save as PDF.
Use tool →Rotate PDF
Turn PDF pages left or right, one at a time or all together, with live previews. Nothing is uploaded.
Use tool →Protect PDF
Add a password to a PDF with AES-256 encryption. Your file and password never leave your device.
Use tool →Unlock PDF
Remove a password or restrictions from a PDF you have permission to unlock. Nothing is uploaded.
Use tool →Add Page Numbers to PDF
Number your PDF pages with a live preview, custom position, format and starting page. Nothing is uploaded.
Use tool →Excel Tools
Clean up and convert spreadsheet dataColumn to CSV
Turn a column from Excel or Google Sheets into a comma-separated list, with other delimiters too.
Use tool →CSV to JSON
Convert CSV, Excel or Google Sheets data to JSON with auto-detected delimiters and smart types.
Use tool →JSON to CSV
Turn JSON arrays and API responses into CSV for Excel or Google Sheets, with nested data flattened.
Use tool →SEO Tools
Improve how your pages appear in search and socialMeta Tag Generator
Create SEO title, description, Open Graph and Twitter Card tags with a live search preview.
Use tool →Robots.txt Generator
Build a robots.txt file with allow and disallow rules, sitemap links and settings for AI crawlers.
Use tool →Keyword Density Checker
Find your most used words and phrases and check how often a target keyword appears.
Use tool →XML Sitemap Generator
Turn your list of page URLs into a valid sitemap.xml file ready to download and submit.
Use tool →XML Sitemap Validator
Check your sitemap.xml for syntax errors, invalid URLs, bad dates and duplicate entries.
Use tool →Text Tools
Count, analyze and polish your writingWord Counter
Instantly count words, characters, sentences and paragraphs, plus reading and speaking time.
Use tool →Case Converter
Switch text between UPPER, lower, Sentence, Title, camelCase, snake_case and more in one click.
Use tool →Grammar Checker
Find spelling, grammar and punctuation mistakes and fix them with one-click suggestions.
Use tool →Random Text Generator
Create Lorem Ipsum or random placeholder text in paragraphs, sentences or words.
Use tool →Developer Tools
Encode, decode and convert data for web developmentURL Encoder & Decoder
Convert text to safe URL format and decode percent-encoded links back to readable text.
Use tool →JSON Formatter
Format, validate and minify JSON instantly, with clear error messages showing where problems are.
Use tool →JSON Validator
Check JSON syntax and find the exact line and column of any error, with hints on how to fix it.
Use tool →Base64 Encoder/Decoder
Convert text or files to Base64 and decode Base64 strings back to readable text.
Use tool →Image Tools
Convert and prepare images privately in your browserImage to PNG
Convert JPG, WebP, GIF, BMP and SVG images to PNG in bulk. Nothing is uploaded.
Use tool →Image to JPG
Convert PNG, WebP, GIF, BMP and SVG images to JPG in bulk, with quality control. Nothing is uploaded.
Use tool →WebP to PNG
Convert WebP images to PNG in bulk, keeping transparency. Nothing is uploaded.
Use tool →Image Resizer
Resize images by pixels or percentage, in bulk, and save them as JPG, PNG or WebP. Nothing is uploaded.
Use tool →Image Cropper
Crop images with a draggable box, fixed shapes like 1:1 and 16:9, or exact pixel sizes. Nothing is uploaded.
Use tool →Image Compressor
Reduce image file sizes by quality or to a target size like 200 KB, in bulk. Nothing is uploaded.
Use tool →Generator Tools
Create codes and files instantly in your browserQR Code Generator
Make QR codes for links, Wi-Fi, email, phone and text, then download them as PNG or SVG. No tracking.
Use tool →MD5 Hash Generator
Create MD5 hashes of text and files, and check a file against a known checksum. Nothing is uploaded.
Use tool →SHA256 Hash Generator
Create SHA-256 hashes of text and files, and check a file against a known checksum. Nothing is uploaded.
Use tool →Password Generator
Create strong random passwords and PINs with a strength meter. Made in your browser, never stored.
Use tool →Barcode Generator
Make Code 128, EAN-13, UPC-A and other barcodes, and download them as PNG or SVG. Nothing is uploaded.
Use tool →Random String Generator
Create random strings, codes, tokens and UUIDs in bulk with custom characters, length and groups.
Use tool →Calculator Tools
Quick calculations for dates, numbers and everyday needsDate Difference Calculator
Find the time between two dates in years, months, weeks and days, with total days and weekdays.
Use tool →Age Calculator
Find your exact age in years, months and days, your next birthday countdown, and your age on any date.
Use tool →Percentage Calculator
Work out X% of a number, what percent one number is of another, and percentage increase or decrease.
Use tool →Scientific Calculator
Calculate with trigonometry, logarithms, powers, roots and factorials, in degrees or radians.
Use tool →Converter Tools
Convert units and values quickly and accuratelyLength Converter
Convert between meters, kilometers, miles, feet, inches, yards and more, with every unit shown at once.
Use tool →Weight Converter
Convert between kilograms, pounds, ounces, grams, stone, tons and more, with every unit shown at once.
Use tool →Speed Converter
Convert between km/h, mph, m/s, knots, Mach and more, with every unit shown at once.
Use tool →Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin and more, with every scale shown at once.
Use tool →Volume Converter
Convert between liters, gallons, cups, fluid ounces, cubic meters and more, in US and UK units.
Use tool →Fast & Simple
Results appear instantly as you type. No waiting, no clutter.
Private by Design
Most tools run entirely in your browser, and we clearly tell you when one needs an online service.
Free Forever
Every tool is free to use with no account or sign-up required.