Bulk image converter
The free bulk image converter that changes the format of hundreds of images at once — HEIC to JPG, PNG to WebP, and more. Convert right in your browser to fix iPhone photos and speed up your pages. No upload, no account, no watermark.
100% free — images are converted on your device and never uploaded.
What a bulk image converter does
A bulk image converter changes the file format of many photos at once — turning HEIC, PNG, JPG and WebP files into the single format you actually need. Instead of opening each picture in an editor and exporting it by hand, you drop a whole folder into the converter, choose one output format, and download every converted image in a single ZIP. Everything happens locally in your browser, so even a large batch of high-resolution photos converts in seconds without ever being uploaded.
Format problems show up everywhere in real work. iPhones save photos as HEIC that many marketplaces and tools refuse to open, websites load faster when images are converted to WebP, and logos only keep a transparent background as PNG. This free online converter handles all of those cases in one place: pick your images, choose a target format, set the quality, and let the tool convert the entire set. No installs, no sign-up, and no quality surprises — just consistent images that are ready to publish. Because the converter works in batches, a job that used to mean exporting files one by one becomes a single drag, click and download, whether you are converting five screenshots or five hundred product photos.
Convert a whole folder in three steps
Drop your images
Add JPG, PNG, WebP or HEIC files — they stay on your device, fully private.
Pick the output format
Convert the whole batch to JPG, PNG or WebP, and set the quality you want.
Download the ZIP
Get every converted image back as a single ZIP, ready to upload.
When to convert images in bulk
One format, everywhere you publish.
iPhone HEIC photos
Convert HEIC to JPG so marketplaces, forms and older software finally accept your iPhone photos.
Faster web pages
Convert JPG and PNG to WebP to shrink file size and lift Core Web Vitals across your site.
Need transparency
Convert to PNG when you need a transparent background for logos, badges and graphics.
Standardize a catalog
Convert a mixed folder to one consistent format across every product image at once.
HEIC, JPG, PNG or WebP: which to convert to?
Pick the output format that fits where the images are going.
JPG
Universally supported and small — the safe choice for marketplaces, listings and email.
PNG
Lossless with transparency — best for logos, graphics and crisp screenshots.
WebP
Smallest for the web at the same quality — the best output for fast pages.
A converter that keeps your images sharp
100% free, no sign-up
Private — no upload, runs in your browser
Convert hundreds of images at once
HEIC, PNG, JPG & WebP support
Quality control on every conversion
One-click ZIP download
Who uses a bulk image converter?
Anyone stuck with images in the wrong format.
E-commerce sellers
Convert iPhone HEIC shots and mixed formats to clean JPGs that every marketplace and listing tool accepts.
Web & blog owners
Convert images to WebP in bulk to make pages load faster, save bandwidth and rank better.
Designers & teams
Normalize a whole asset library to one format so handoffs, exports and pipelines stay tidy.
Tips for converting images
Convert once, use everywhere.
HEIC → JPG for compatibility
JPG is accepted everywhere — convert HEIC to JPG before uploading to any marketplace, form or CMS.
Convert to WebP for the web
If the images are headed to a website, convert to WebP to cut file size with no visible quality loss.
Keep PNG only for transparency
Convert to PNG only when you truly need a transparent background — otherwise JPG or WebP is smaller.
Explore the toolkit
Bulk image generator
Generate hundreds of AI product images from a CSV.
OpenBulk image resizer
Resize, convert and compress images — free, in your browser.
OpenBulk image compressor
Compress images in bulk — smaller files, same quality, free in your browser.
OpenBulk image cropper
Crop images in bulk to one aspect ratio — free, in your browser.
OpenBulk image watermark
Add a text or logo watermark to many images at once — free.
OpenInstagram grid maker
Split a photo into a 3, 6 or 9-tile Instagram grid — free, in your browser.
OpenBulk image upscaler
Increase image resolution in batches.
Background remover
Remove backgrounds from product photos in bulk.
Bulk image converter FAQ
Is it really free?
Yes — the bulk image converter is completely free, with no sign-up, no account, no watermark, and no limit on how many images you convert.
Are my images uploaded anywhere?
No. The whole converter runs in your browser on your own device, so your images are never uploaded to a server and never leave your computer.
Can I convert HEIC to JPG?
Yes — the converter decodes Apple's HEIC format right in your browser and converts it to JPG, PNG or WebP, so your iPhone photos work everywhere.
What formats can I convert?
Import HEIC, JPG, PNG or WebP, and convert the whole batch to JPG, PNG or WebP — for example HEIC to JPG, or PNG to WebP.
Will converting change the file size?
Often, yes. Converting JPG or PNG photos to WebP usually makes them smaller, while PNG output is larger but lossless.
Does converting reduce quality?
Converting to a lossy format (JPG or WebP) applies the quality you choose; converting to PNG is lossless. At 80–90 most images look identical to the original.
Can I resize while converting?
Yes — turn on the max-size option to cap the longest side as you convert, which produces even smaller files.
Why convert images to WebP?
WebP is around 25–35% smaller than JPG at the same quality, so it speeds up web pages and improves your Core Web Vitals.
Do you support AVIF?
You can convert from AVIF wherever your browser supports it; the output is JPG, PNG or WebP.
Do I need to install anything?
No. The bulk image converter runs in any modern browser — nothing to install, no extension, and nothing to sign up for.