About ByteRivet
ByteRivet provides test-file generators and file tools. Check each tool’s processing model and limits before selecting a file.
What ByteRivet is
ByteRivet is a browser-based toolkit for working with files: generating exact-size test files, converting between formats, and editing PDFs and images — built as fast, focused tools rather than one bloated do-everything app.
Why we built it
We kept running into the same wall: needing a file of a very specific size to test an upload limit, or a quick PDF merge, and finding every existing tool either buried the feature behind a signup wall, capped free use, or quietly uploaded files to a server we had no reason to trust. ByteRivet started as a fix for that one frustration — a test-file generator that ran entirely in the browser — and grew into a toolkit built on the same principle: do the job, stay out of the way.
What it solves
- Testing upload limits and file validation without hunting for a sample file of the exact right size
- Converting and editing PDFs and images without installing desktop software
- Working with files without an account, a subscription, or a file ending up on someone else’s server when it doesn’t need to
The toolkit
Test File Generator
Set a size, pick a format, get an exact-byte file — PDF, PNG, ZIP, DOCX, XLSX, CSV, MP3 and more, assembled on your machine.
PDF Tools
Merge, split, organize and watermark PDFs entirely in the browser.
Image Tools
Compress, convert, crop, resize and rotate images without leaving the tab.
File Converters
Convert between images, PDFs and Office documents.
How processing works
Most tools here — the test-file generator, PDF tools, and image tools — run entirely in your browser using Web Workers. Nothing is uploaded, and the tool keeps working with your network switched off. A few conversions (Office documents to PDF and back) need a real document engine that can't run in a browser tab; those files are sent over HTTPS to a processing service, handled, and deleted afterward. We say which is which on every tool page, rather than one blanket claim that would be false for some of them.
Privacy and transparency
ByteRivet does not require an account. Browser processing, server conversions, Google Analytics and support requests have different data flows. Our Privacy Policy explains what each sends and stores.
Built for a global audience
ByteRivet is available in English, Turkish, Spanish, German and French, with every page — not just the interface chrome — translated and maintained per language.
Questions or feedback?
If something doesn't work the way it should, or you just want to ask something, the contact form is the fastest way to reach us.