TinyPNG alternative (no upload)
Shrink JPG, PNG, and WebP like the tools you know — without sending images to a compression API.
🚫 no upload
🌱 on-device
🆓 free
⚡ browser / Wasm
TinyPNG popularized smart image compression. It also uploads your images to do the work. GroundPDF is a TinyPNG alternative for people who want local compression.
Features
- Single image compress with quality control
- Bulk compress without a small free-tier file cap
- Convert, resize, crop
- Optional images → PDF without upload
Quality tips
- Start around quality 75–85 for photos.
- Compare side by side before replacing originals.
- Use bulk mode for folders of blog or store assets.
FAQs
Is WebP supported?
Yes — convert and compress common web formats in-browser.
Any 20-image limit?
No TinyPNG-style free cap. Device memory is the practical limit.
Are images uploaded?
No. Compression runs locally.
Free?
Yes.