81 free tools · No sign-up · Files stay on your device
Free online tools for PDFs, images, text and code
Everything You Need. One Place. Completely Free. Merge PDFs, compress images, generate QR codes, format JSON and run everyday calculations — right in your browser.
Popular tools
The tools people reach for most.
PDF Merger
Combine several PDF files into one document in the order you choose.PDF Compressor
Make PDFs smaller with lossless optimisation or strong page rasterisation.PDF to Images
Convert PDF pages to PNG or JPG images at the resolution you choose.Images to PDF
Turn JPG, PNG and WebP images into one PDF with page size and margins.Image Compressor
Shrink JPG, PNG and WebP files with a quality slider, batch mode and ZIP download.Image Resizer
Resize images by pixels or percentage, with social media presets and batch support.PNG to JPG
Convert PNG images to smaller JPG files with a chosen background colour.QR Code Generator
Create a QR code for any website link, with colours, size and PNG/SVG download.Word Counter
Count words, characters, sentences and paragraphs, with reading time and keyword density.Case Converter
Switch text between UPPER, lower, Title, Sentence, camelCase, snake_case and more in one click.JSON Formatter
Beautify, validate and pretty-print JSON with clear error locations.Percentage Calculator
Find X% of a number, percentage change, percentage difference and more, with the working shown.
Browse by category
- 10 tools
PDF Tools
Merge, split, compress, convert and protect PDF documents in your browser. - 11 tools
Image Tools
Compress, resize, crop and convert JPG, PNG and WebP images instantly. - 7 tools
QR Code Tools
Create QR codes for links, Wi-Fi, email and contacts, or scan existing codes. - 10 tools
Text Tools
Count words, change case, compare text, clean up lines and convert Markdown. - 16 tools
Developer Tools
Format JSON, decode JWTs, encode Base64 and URLs, test regex and more. - 10 tools
Calculators
Percentages, age, dates, BMI, loans, GST, interest and unit conversions. - 8 tools
File Utilities
Convert CSV and JSON, format XML, extract ZIP archives and inspect files. - 9 tools
Design & Web Tools
Pick colours, build gradients and shadows, generate favicons and meta tags.
Most frequently used tools
Everyday favourites. Once you use a few tools, your personal shortcuts appear here.
Recently added
The newest tools on Devtools 360.
QR Code Scanner
Scan QR codes with your camera or from a screenshot, and check links safely.File Information Viewer
See a file's real type, exact size, SHA-256 checksum and first bytes.HTML Entity Encoder
Escape text into HTML entities or decode named, decimal and hex entities back to characters.PDF Metadata Viewer
See a PDF's title, author, dates, version, page sizes, encryption and XMP data.Text Sorter
Sort lines alphabetically, naturally, by length or number, reverse or shuffle them.YAML to JSON Converter
Convert YAML to JSON (multi-document aware) or JSON back to YAML with precise error locations.
Recommended for you
Useful tools you may not know about.
PDF to Images
Convert PDF pages to PNG or JPG images at the resolution you choose.QR Code Scanner
Scan QR codes with your camera or from a screenshot, and check links safely.Text Diff Checker
Compare two texts and highlight added and removed lines, words or characters.Unit Converter
Convert length, mass, temperature, area, volume, speed, time, storage, pressure and energy units.ZIP Extractor
Open a ZIP archive in your browser, preview files and download what you need.CSS Gradient Generator
Design linear, radial and conic CSS gradients with editable colour stops and copy the code.
Tool collections
Hand-picked sets for common jobs.
Office paperwork
Prepare documents for email, forms and archives.
Web developer essentials
Debug payloads, tokens and markup without leaving the browser.
Faster website images
Ship lighter images and the right sizes for every screen.
Personal finance
Plan repayments, savings and invoices with clear workings.
Writing and editing
Hit word limits, fix formatting and compare drafts.
Launching a website
Everything for search results, social previews and icons.
How Devtools 360 works
1. Find a tool
Search by what you want to do — “shrink a PDF”, “resize photo” — or browse a category.
2. Add your file or text
Drop a file or paste text. It is read by your browser, not uploaded, and processed on your device.
3. Download the result
Adjust settings, preview the output and download or copy it. No sign-up, no watermark.
Private by design
Most online converters upload your documents to their servers. Devtools 360 does the work inside your browser instead, using open-source libraries such as pdf-lib, PDF.js and Prettier. That makes it fast, and it means your contracts, photos and API tokens stay on your device.
Read the privacy policyProcessed locally
Files are handled by JavaScript, Web Workers and WebAssembly on your device.
No content tracking
We never log file names, file contents or the text you enter.
No account needed
No sign-up and no email address. Favourites are saved only in your browser.
Secure delivery
Served over HTTPS with a strict content security policy and no third-party ads.
Frequently asked questions
Are the tools really free?
Yes. Every tool is free to use without an account, usage caps or watermarks. The site is designed to run in your browser, which keeps our costs low enough to offer it for free.
Do you upload my files?
No. Files are opened with your browser's File API and processed on your device using JavaScript, Web Workers and WebAssembly. They are not sent to our servers or any third party.
Do the tools work on phones and tablets?
Yes. Every page is responsive and the tools work in current versions of Chrome, Safari, Firefox and Edge on mobile. Very large files may be slower on phones because processing uses your device's memory.
Which browsers are supported?
The latest two versions of Chrome, Edge, Firefox and Safari on desktop and mobile. A few features depend on newer browser APIs — for example the colour eyedropper or native QR detection — and each tool tells you when a fallback is used or a feature is unavailable.
Is there a limit on how often I can use a tool?
No. Use the tools as often as you like. File size limits are listed on each tool page and exist only to protect your browser's memory.