5 Best Free Convertio Alternatives (2026)
Published on March 2, 2026
Convertio is a popular online file converter, but its free tier caps you at 100 MB per file and 10 conversions per day. If you need to convert files without those restrictions, here are five free alternatives that work without signup.
1. FileToolWorks
FileToolWorks offers 40+ free browser-based tools for images, PDFs, video, audio, and documents. Every conversion runs locally in your browser using WebAssembly, so your files never get uploaded to a server. No file size limits, no daily caps, no account required.
Standout tools include the audio compressor, AI background remover, PDF merger, and video to GIF converter. Since nothing leaves your device, it handles large files that cloud-based tools reject.
2. CloudConvert
CloudConvert supports over 200 file formats and handles batch conversions well. The free plan gives you 25 conversions per day with a 1 GB file size limit. Files are processed on their servers, so you do need to upload them. Good option if you need obscure format support.
3. FreeConvert
FreeConvert handles image, video, audio, and document conversions with a clean interface. The free tier allows files up to 1 GB. It runs server-side processing, which means faster conversion for large files but requires uploading. Supports batch processing for multiple files. See our detailed FreeConvert comparison.
4. Online-Convert
One of the oldest file converters on the web, Online-Convert covers a wide range of formats including ebook and CAD conversions. The free version limits file size to 100 MB. The interface is dated but functional, and it provides detailed conversion settings for advanced users.
5. Zamzar
Zamzar has been around since 2006 and supports 1200+ file formats. The free plan allows two files per day up to 50 MB each, which is the most restrictive on this list. However, it covers niche formats that other tools skip, making it useful for rare conversion needs.
Quick Comparison
If privacy matters to you, FileToolWorks is the only option that processes files entirely in your browser. CloudConvert and FreeConvert offer the most generous free limits for server-side processing. For the widest format support, Zamzar and Online-Convert cover the most ground.
All five are genuinely free to use. The right choice depends on whether you prioritize privacy (browser-based), file size limits (CloudConvert), or format variety (Zamzar).
For a detailed feature-by-feature breakdown, see our full FileToolWorks vs Convertio comparison.