Batch Compress Images

About This Tool

Batch Compress applies the same compression settings to a whole folder of images at once — up to 50 files per run, all processed locally in your browser. It is the fastest way to slim down an entire product catalog, a photo shoot or a stack of scanned receipts without opening a desktop editor. Each file keeps its own name and relative order, and the results table shows the individual size reduction for every image so you can spot any file that needs special treatment.

How to Use This Tool

1. Click the drop zone and select multiple files, or drag a whole selection from a folder window.
2. Check the file list — remove any image you did not mean to include with the small delete button next to its name.
3. Set the quality (80 for mixed photo collections) and an optional Max Width to cap very large camera files.
4. Start the batch and watch the progress bar; a 20-file run usually finishes in under 30 seconds on a modern laptop.
5. Review the results table showing original size, new size and percentage saved per file.
6. Download files one by one, or grab the ZIP with everything processed.

Advantages & Use Cases

Preparing 40 product photos for an online store upload, shrinking a whole vacation album before sharing it in a group chat, or compressing last year's invoices into a single small ZIP for accounting. Photographers deliver client previews by compressing 30 watermarked JPGs in one pass. It is also the routine fix for a slow WordPress media library: re-compressing all images before re-uploading typically cuts total page weight by half.

Supported Formats & Recommendations

• JPEG and WebP handle batches of photos best; PNG batches (screenshots, logos) compress less but still benefit from width capping.
• Mixed batches: use Keep Original so PNGs stay PNG and JPGs stay JPG.
• If your batch exceeds 50 files, split it in two runs to keep the browser tab responsive.

How We Test This Tool

We run a standard 25-file mixed batch (JPEG, PNG, WebP, different dimensions) on every release and verify that all 25 outputs download correctly, file names are preserved, no file is skipped or corrupted, and the reported sizes match the actual downloaded bytes.

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Helpful Resources

Frequently Asked Questions

Is there a limit on the number or size of files?

Up to 50 files per run works comfortably in most browsers; the practical limit is your available memory, so batches of very large 50 MB RAW-converted files may need smaller groups. The tool warns you before starting if a file looks unusually heavy.

Will the ZIP include the original file names?

Yes. Names, order and extensions are preserved (unless you change the output format, in which case only the extension changes).

Can I use different settings for one file inside the batch?

Set that file aside and process it alone with custom settings — a batch applies one shared setting so results stay predictable.