Image Compressor
Compress JPG, PNG and WebP images up to 90% smaller without visible quality loss.
Open tool →Every File Tool You Need.
Free. Private. In Your Browser.
120 professional tools for PDFs, images, documents and conversions — with zero uploads. Your files never leave your device.
0Free tools
0Browser-based
0Files uploaded, ever
0Tool categories
Most loved
Popular Tools
The tools our visitors reach for every day.
PDF Merger
Combine multiple PDF files into one document. Drag to reorder, then merge in seconds.
Open tool →Image Resizer
Resize images to exact pixel dimensions or percentages while keeping quality sharp. Supports JPG, PNG and WebP.
Open tool →PDF Compressor
Reduce PDF file size for email and web while keeping documents readable.
Open tool →QR Code Generator
Create high-resolution QR codes for URLs, Wi-Fi, text and more - free with no watermark.
Open tool →JPG to PDF Converter
Turn JPG photos into a single PDF - reorder pages, set page size and margins.
Open tool →Image Cropper
Crop images with precise selection handles, aspect-ratio presets and instant preview.
Open tool →PDF Splitter
Split a PDF into separate files by page ranges or extract every page individually.
Open tool →Browse
Tool Categories
120 tools across four categories — each one free, private and instant.
Image Tools
Edit, enhance and transform images directly in your browser
40 tools →PDF Tools
Merge, split, compress and edit PDF files securely
40 tools →Document Converters
Convert documents between popular formats instantly
20 tools →Graphics Converters
Convert images and graphics between every major format
20 tools →Simple by design
How It Works
1
Pick a tool
Search or browse 120 tools for PDFs, images, documents and conversions.
2
Add your file
Drag & drop or browse. Files open directly in your browser — nothing is uploaded.
3
Download the result
Processing runs on your device and finishes in seconds. Download and done.
Why Onnax
Why Choose Onnax Tools?
Radically private
Your files are processed with JavaScript on your own device. They never touch a server, so they can never be stored, scanned or leaked.
Faster than upload sites
No upload queue, no server wait, no download delay. Most operations finish in under two seconds.
Free forever
No trial that expires, no watermark, no “3 files per day” counter. Advertising keeps every tool free for everyone.
Works everywhere
Phone, tablet, laptop, Chromebook — if it runs a modern browser, every tool works, fully responsive.
120 tools, one place
Stop hunting for a different site for every task. PDFs, images, documents and converters live under one roof.
No account needed
We don't want your email. Open a tool, get your result, get on with your day.
Loved by users
What People Say
★★★★★
“I use the image compressor and favicon generator weekly. The fact that files never upload anywhere sold me instantly — client work stays confidential.”
Sarah K.Freelance designer
★★★★★
“Merging invoices into one PDF used to mean emailing files to myself and praying. Now it takes ten seconds, free, on my phone.”
David M.Small business owner
★★★★★
“Converted my whole thesis workflow — Markdown to PDF, images compressed, references merged. Everything just works, no signup walls.”
Priya R.Graduate student
★★★★★
“Genuinely fast because there's no upload. I've replaced three paid subscriptions with this site.”
Tomás L.Web developer
Questions
Frequently Asked Questions
Are Onnax Tools really free?
Yes — every one of the 120 tools is completely free with no premium tier, no trial limits and no watermarks. The site is supported by advertising.
Are my files uploaded to a server?
No. All tools run locally in your browser using JavaScript. Your files are processed on your own device and never transmitted anywhere.
Do I need to create an account?
No account, no email, no sign-up. Open a tool and use it immediately.
Which devices and browsers are supported?
Any modern browser — Chrome, Firefox, Edge, Safari — on Windows, macOS, Linux, Android and iOS. All tools are fully responsive.
Is there a limit on file size or number of uses?
No artificial limits. Since processing happens on your device, the only practical limit is your device's own memory.
How do the tools work without a server?
Modern browsers include powerful APIs for reading files, drawing graphics and generating downloads. Combined with open-source JavaScript libraries, they can do work that once required installed software.
Ready to Get Things Done?
Join thousands of daily users who fixed their file problems in one browser tab.
Explore All 120 Tools