Whether you just bought a new iPhone (which saves photos as HEIC) or received a WebP file that won't open in your editing software, you need a reliable image converter. And once the image is sorted, you often need a quick utility too — a compressor, a resizer, a calculator. Most tools are paid, full of ads, or require you to create an account just to download your file.
We tested over a dozen tools and shortlisted the five that are genuinely free, fast, and work without any friction. ConvertLinx is our own tool, so we've kept to what it actually does. Here's what we found.
Quick comparison: top 5 image converter & utility tools
| Tool | No signup | HEIC support | Bulk convert | Utility tools | No watermark |
|---|---|---|---|---|---|
| ConvertLinx | ✓ | ✓ | ✓ | ✓ | ✓ |
| FreeConverto | ✓ | ✓ | ✓ | ✓ | ✓ |
| CloudConvert | ✗ | ✓ | ✓ | ✗ | ✓ |
| Squoosh | ✓ | ✗ | ✗ | ✗ | ✓ |
| iLoveIMG | ✓ | ✗ | ✓ | ✗ | ✓ |
1. ConvertLinx — Best free image format converter for private, bulk conversion
ConvertLinx Image Converter
The ConvertLinx image format converter reads 22 input formats, including JPG, PNG, WebP, HEIC, AVIF, PSD and camera RAW files, and saves to 12 output formats. You can convert many images at once, set the quality for JPG, WebP, AVIF and JPEG XL, and download everything together. Conversion happens inside your browser, so your pictures are never uploaded, and there is no signup and no watermark.
Try the Image Converter Free →Most jobs don't stop at the format change, so ConvertLinx covers the next steps too. Use the image compressor to reduce file size, or the image resizer to fit a website or form. For common single conversions there are dedicated tools: HEIC to JPG, PNG to JPG and JFIF to JPG.
Pro tip: Not sure which format to choose? Our image converter guide compares JPG, PNG, WebP and HEIC.
2. FreeConverto — Good all-in-one toolkit
FreeConverto
FreeConverto bundles around 28 free tools on one site, including image, PDF and everyday utility tools. A handy option if you want calculators and other helpers next to your image tools.
3. CloudConvert — Best for rare formats
CloudConvert
Supports 200+ formats, including many obscure file types. The right choice when you need a format most image tools don't handle. The downside: a free account is required for extended usage beyond a few conversions per day.
4. Squoosh — Best for compression
Squoosh by Google
Built by Google Chrome Labs, Squoosh runs entirely in the browser using WebAssembly. It's a compression specialist — not really a format converter — but excellent for shrinking PNG or JPG files for web use with precise quality control and a live side-by-side preview.
5. iLoveIMG — Best for batch operations
iLoveIMG
The image counterpart to iLovePDF. Handles bulk operations well — resize, compress, convert, crop, and watermark multiple images at once. The free tier is generous but has a file size limit per conversion.
Frequently asked questions
Our pick is the ConvertLinx Image Converter, our own tool. It reads 22 input formats, saves to 12 output formats, works in bulk and runs in your browser with no signup and no watermark.
Yes. Use ConvertLinx's HEIC to JPG converter, or the Image Converter if you want HEIC as PNG, WebP or another format. Both work right in your browser — no app download needed.
Open an online image format converter, upload your picture, pick the new format and download the file. If you only need one common change, go straight to PNG to JPG or JFIF to JPG.
Yes. ConvertLinx has free tools that run without an account, such as the image compressor, image resizer and signature maker.
If your file is in a less common format, turn it into JPG first with the Image Converter, then use the PDFLinx image to PDF tool to turn it into a PDF in seconds.
It depends on the tool. Some send files to a server and delete them later, so always check the privacy policy. The ConvertLinx Image Converter works inside your browser, so your pictures are never uploaded.
Conversion changes the file format (e.g. HEIC → JPG). Compression reduces file size while keeping the same format. On ConvertLinx you can change the format with the Image Converter, then shrink the result with the Image Compressor.
Ready to convert your images?
Change JPG, PNG, WebP, HEIC, RAW and more into the format you need — free on ConvertLinx, right in your browser. No signup needed.