BulkPicConv vs TinyPNG vs Squoosh: Which Image Converter Is Right for You?
An honest comparison of the three most popular image optimization tools in 2025.
| Feature | BulkPicConv | TinyPNG | Squoosh |
|---|---|---|---|
| Price | Free (no limits) | Free (5 files/mo, 5MB max) | Free (open source) |
| Privacy | 100% local (no upload) | Uploads to server | 100% local |
| Batch conversion | Unlimited files | 5 files at a time | 1 file at a time |
| Output formats | WebP, AVIF, JPEG, PNG | WebP, PNG, JPEG | WebP, AVIF, JPEG, PNG, +more |
| Input formats | JPEG, PNG, GIF, BMP, HEIC, WebP | PNG, JPEG, WebP, GIF | JPEG, PNG, WebP, AVIF, +more |
| Image editing | Crop, rotate, flip, filters, color | None | Resize only |
| Watermark | Text + image watermark | No | No |
| AI features | Smart recommend, alt text, BG removal | No | No |
| Presets | Shopify, WordPress, Instagram, Email | No | No |
| API / SDK | REST API + Node/Python/PHP SDKs | TinyPNG API (paid) | No |
| WordPress plugin | Yes (free) | Yes (paid) | No |
| Before/After compare | Slider + side-by-side | No | Real-time slider |
| Works offline | Yes (after page load) | No | Yes (PWA) |
| No sign-up required | Yes | Yes | Yes |
| No watermark on output | Yes (free & Pro) | Yes | Yes |
Our Take
TinyPNG is a solid choice if you only need to compress a few PNG/JPEG files occasionally and don't mind uploading them to a server. However, the free tier is very limited (5 files, 5MB max), and the API requires a paid subscription.
Squoosh (by Google) is a great developer tool for comparing formats side-by-side in real-time. But it only handles one image at a time, making it impractical for batch workflows. It's best for fine-tuning a single hero image.
BulkPicConv combines the best of both worlds: local processing (like Squoosh) with unlimited batch conversion (unlike both). Plus it adds features neither competitor offers — watermarking, AI tools, e-commerce presets, API access, and WordPress integration — all for free.
Who Should Use What?
- Choose BulkPicConv if you need batch conversion, privacy (no uploads), AI features, or developer tools (API/SDK/WordPress plugin).
- Choose TinyPNG if you only compress a handful of files per month and prefer a simple drag-and-drop interface.
- Choose Squoosh if you're a developer who wants to manually compare formats and quality settings for a single image.