Shave ~25–35% off every photo with no visible difference: batch-convert JPG to WebP with a quality slider and an exact savings readout per file. No uploads — it all happens on your device.
Receipts, whiteboards, book pages — Kaizen OCR & PDF turns photos into editable, searchable text completely offline on Windows. No cloud, no subscription.
Browser-quick version: the free Image to Text tool.
Both are lossy photo formats, but WebP's compression is a generation newer — at matched visual quality a WebP photo runs 25–35% smaller than the JPG. Across a gallery page or a product catalogue that's the difference between a sluggish load and an instant one, and it compounds into real bandwidth savings on image-heavy sites.
Your JPGs were already lossy. Re-encoding always costs a little more detail, so the goal is to do it once, at the right setting: convert from the best JPG you have (ideally the camera original), pick 0.85, and check the result at full size. Don't chain conversions — JPG → WebP → JPG → WebP degrades like a photocopy of a photocopy. Keep originals archived; publish the WebP.
| Slider | Use case | Typical saving vs source JPG |
|---|---|---|
| 0.90 | Portfolio / photography showcase | ~15–25% |
| 0.85 | Blogs, shops, general site imagery | ~25–35% |
| 0.75 | Thumbnails and previews | ~40–55% |
Format is half the win — dimensions are the other half. A 4000px camera photo displayed at 800px wastes most of its bytes; resize first with the Resize Image tool, then convert here. PNGs with transparency go through PNG to WebP instead, mixed batches through the two-way Image Converter, and if a legacy uploader rejects .webp later, WebP to PNG converts it right back.
Typically 25-35% at quality 0.85 with no visible difference. The exact figure is shown beside each converted file. Highly compressed source JPGs save less — they've already been squeezed.
Any re-encode of a lossy format costs a little detail. At 0.85 the loss is imperceptible in normal viewing. Convert once from your best original and archive it — don't convert back and forth.
Usually not — several email clients and older office tools still preview JPG more reliably. WebP shines on the web; for email, keep JPG or use the reverse converter.
Yes. Files process one after another on your own machine with no upload bottleneck — a few hundred photos is a coffee-break job, and Download all fetches the lot.
No — the canvas-based conversion strips metadata, which is usually a privacy win for photos going online. If you need EXIF preserved, keep the original JPG alongside the published WebP.