Optimize

Bulk image optimizer — compress a folder at once

Files never leave your device

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Drop a folder or multiple files here, or click to browse.

or choose a file from your device
Input: JPG, PNG, WEBP

Compress a selected folder or multiple images at once using a sensible preset (Web / Balanced / Aggressive). One click, one zip.

FreeFiles stay on deviceIn-browserPopular
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How it works

Three steps from start to finish.

Select a folder or multiple files

Point the tool at a folder or select many images at once — it reads them all locally without uploading anything.

Pick a compression preset

Choose Web (safe, minimal visible change), Balanced (a moderate trade-off) or Aggressive (smallest files, more visible compression).

Download one optimized zip

Every file is processed with the same preset and bundled into a single zip, ready to upload or archive.

Use cases

Where this tool earns its keep.

Prepping a product catalog for a website

Optimize dozens or hundreds of product photos in one pass before a store launch or catalog refresh.

Shrinking a phone's camera roll before backup

Cut the storage footprint of a large batch of photos before uploading them to cloud storage or archiving them.

Cleaning up a blog or content folder at once

Run a whole article's or project's worth of images through a single optimization pass instead of one by one.

Standardizing image weight across a project

Bring a folder of mixed-source images — different cameras, different original sizes — to a consistent, web-friendly weight.

Tips

Get the most out of it.

Pick a preset

Web is safe, Balanced trades a bit of quality, Aggressive is small.

Sort by size first

Find the worst offenders before reprocessing the lot.

Re-run on outliers

A handful of files always need a custom pass.

Common mistakes

Avoid these before you export.

Applying Aggressive to images that need to stay sharp

Aggressive trades visible quality for the smallest files — fine for thumbnails or backgrounds, risky for hero images or detail shots people will zoom into.

Skipping a spot-check before processing everything

Run a small sample through first and zoom into the result. Catching an overly aggressive setting after 200 files is far more costly than catching it after five.

Treating a mixed batch as one uniform job

A folder containing both simple graphics and detailed photos rarely suits a single preset equally well. Consider splitting very different image types into separate passes.

FAQ

Questions people ask about this tool.

What's the actual difference between the presets?
Web keeps quality changes minimal and is the safest default; Balanced trades a bit more visible quality for meaningfully smaller files; Aggressive prioritizes the smallest possible size and shows the most visible compression.
Can I preview results before downloading the whole batch?
Yes — process a small sample first, inspect it at full size, and adjust the preset if needed before committing to the full folder.
Is there a limit to how many files I can process at once?
The practical limit depends on your device's memory and the size of the files — since everything runs locally in the browser, very large batches may take longer but there's no artificial cap or upload quota.