By ShinobiTools Team · Last updated: August 2026
A folder of photos to shrink for a website?
Select the lot and convert them to WebP in one pass, with a single Save all at the end. Because nothing is uploaded, this batch convert has no per-file limit: your own browser re-encodes each image. Need to go the other way? The webp to jpg converter on this site handles that direction.
Every converter here is free, full size, no account. Photos convert in your browser and never leave it, except camera RAW files and SVG tracing. Those, like video, audio and e-books, need our server, and we delete them right after.
Most bulk converters cap what you can do at once: ten files, twenty a day, or a queue that wants an account first. That limit exists because someone is paying a server to process every file. Nothing here runs on a server: your own browser re-encodes each image, so there is no per-file cost to ration and no queue to join.
What that means in practice: convert a dozen product photos before lunch, or work through several hundred images from an old gallery in one sitting. Your browser will keep going steadily, with each finished file appearing in the list as it is done. For anything past a couple hundred, doing it in batches of roughly fifty keeps the tab responsive and lets you start saving before the whole set is through.
That's really the whole point of the page: convert images to WebP in bulk without a queue, an account, or a per-file limit to work around.
HEIC, JPG and PNG all convert to WebP here, and you can mix formats freely in the same batch: a folder with some phone photos and some PNGs from a design tool comes out the other end as a single, consistent set of WebP files, each keeping its original name.
Nothing leaves your device. The conversion runs inside this page, in your browser, so your photos are never uploaded to us or to anyone else: there is no server here to upload them to. That also means it keeps working on a bad connection, and it costs nothing per file.
Need a single file instead of a folder? PNG to WebP and HEIC to JPG are the same converter, one page each.
WebP is built for the web, not for handing to someone else: every current browser displays it natively, and at matching visual quality it typically lands meaningfully smaller than the JPG or PNG it started as. That is exactly why it is worth converting a whole folder before it goes anywhere near a website, rather than one image at a time as you need it: a product catalogue, a photo gallery, a batch of blog images.
The trade-off runs the opposite way from HEIC: WebP is the format a browser wants, not the format a client, a printer or most desktop photo viewers expect. Keep JPG or PNG copies of anything that is leaving the browser: an email attachment, a print order, a file headed into someone else's software, and reserve the WebP batch for what actually ends up on a page.
There is no ZIP file at the end of this, on purpose. Each image gets its own download link as it finishes, and once two or more are ready a Save all button appears that fires the downloads off one after another rather than zipping them. The first time, your browser asks permission to save multiple files at once: allow it, and the rest land in your Downloads folder.
Because this page accepts HEIC, JPG and PNG in the same batch, the useful bit is what happens to the names: whatever the source extension was, every result comes out as the same filename with .webp on the end, so a mixed folder does not come back as a mixed mess. It comes back as one consistent set.
Need it as one document rather than separate files? ScanReviver combines up to ten photos into a single multi-page PDF.
HEIC, JPG and PNG, and you can mix them in the same batch: each one comes back as a WebP with the same name.
There is no fixed limit, because nothing is uploaded and no server is paying for the work. A few dozen is quick; for several hundred bulk images, do the batch conversion in rounds of about fifty.
No. Save all downloads each WebP separately: your browser asks once for permission to save multiple files and then they all arrive in your Downloads folder. Calling that a ZIP would be a lie.
Nothing at all. Your photos are converted inside your browser and never sent anywhere, so there is no file on our side to delete, share or train on.
Yes. Each file keeps its original name with .webp instead of the source extension, so the set stays in the same order.
Neither. No account, no sign-up, no daily cap and no watermark.
It uses the processor while it runs, so a laptop will spin its fan on a big batch. Close the tab and it stops immediately.
A little: WebP at these settings is lossy, like JPG, so each image is re-encoded once. At the 92% quality used here you would struggle to see the difference on a photo. PNGs with sharp text are the one case to check at full zoom; JPGs, already lossy, lose nothing visible.
Yes, that's what it's built for: select every image of a gallery or a product catalogue at once and save them all. It's an images to WebP converter that runs in your browser, so a few hundred files cost nothing but time.
Yes: converting to WebP shrinks the files as a side effect, so it's also a way to compress images in bulk. Want to compress an image without changing its format? PicReviver's image compressor does that.
Yes: select just one file if that's all you need. To convert image to WebP it's the same box whether it's a single photo or a few hundred, just without the Save all step at the end.
Same job: a whole folder to WebP. The difference here is that nothing is uploaded, so there's no file limit and no waiting for a server.
Yes: as a bulk images to WebP converter it takes a whole selection at once and works through it in your browser, then Save all downloads the lot.
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