Need the best image format converter online? Whether you're converting HEIC from your iPhone, optimizing PNGs to WebP, or standardizing to JPEG, this comparison covers the top tools for 2026.
What to look for in a format converter
- Format support: At minimum PNG, JPEG, and WebP. HEIC support is increasingly important for iPhone users.
- Quality control: A quality slider for lossy formats prevents unnecessary degradation.
- Privacy: Browser-based conversion keeps images off third-party servers.
- Speed: Client-side tools convert instantly without upload/download round trips.
- Batch support: Converting multiple files at once saves time for bulk workflows.
Comparison: Best online image format converters
| Tool | Strength | Tradeoff |
|---|---|---|
| PhotoRadar Format Converter | Browser-based, HEIC support, quality slider, linked workflow with compressor and cleaner | Account-gated for extended use |
| CloudConvert | 200+ formats, API access, reliable | Uploads to servers, free tier limited to 25 conversions/day |
| Convertio | Simple UI, wide format support | Server upload, 100 MB limit, ads on free tier |
| Squoosh | Fully client-side, fine-grained codec control | No HEIC support, one image at a time, steeper learning curve |
| iLoveIMG | Bulk conversion, many tools in one place | Server upload, watermark on free tier |
| FreeConvert | Good format range, batch mode | Upload-based, slow for large files, ads |
Why PhotoRadar fits conversion workflows
PhotoRadar's Format Converter works within a connected image toolkit:
- Convert formats — HEIC to JPEG, PNG to WebP, or any combination with a quality slider.
- Compress the converted file further for web performance.
- Clean metadata before sharing to strip GPS and camera data.
Privacy and processing
PhotoRadar processes everything in your browser — including HEIC decoding. Files never leave your device. CloudConvert, Convertio, and iLoveIMG all upload to their servers, which matters for sensitive or client images.
Who should use what
If you need to convert non-image file types (PDF, video, audio), CloudConvert is hard to beat. If you want granular codec control, Squoosh is excellent. If you need a fast, private image converter with HEIC support and linked optimization tools, the PhotoRadar Format Converter is the strongest choice.