FileKeeps

Batch AI Orchestrator

Convert many images at once — concurrency · isolated failures · resume · ZIP export

On-Device

1. Select images (multiple)

2. Conversion settings

Target
Quality
Concurrency2

3. Run

Image conversion runs in parallel on the browser canvas — the concurrency slider actually works. For other formats like audio and video, use the single-file Smart Converter. Progress is checkpointed to IndexedDB, so you can resume even after the tab closes.

Converts many images to another format at once. Runs in parallel and resumes where it left off if interrupted.

What you can do

  • ✓Bulk image conversion
  • ✓Parallel processing — adjustable with a slider
  • ✓Per-file failure isolation — one failure never stops the batch
  • ✓Resume (IndexedDB checkpoints) and ZIP export

How to use

  1. 1Upload multiple images
  2. 2Set the target format, quality, and concurrency, then run
  3. 3Download everything as a ZIP when done

Supported formats · PNG · JPG · WEBP · GIF and more

Convert the format and quality of dozens or hundreds of photos at once. Several run in parallel, one failure doesn't stop the rest, and if you close the browser midway, finished files are skipped when you resume. Results come as a ZIP, and everything runs inside your browser.

How to use it

  1. 1Drop or select the images to convert.
  2. 2Choose the output format (JPG, PNG, or WebP), the quality, and how many to process at once.
  3. 3Click Convert, watch the progress, and download the ZIP.

When it comes in handy

Turning hundreds of camera photos into WebP to save storage, unifying every product photo for a shop to the same format and quality, or converting a folder of images in an old format to JPG in one go.

For one or two images, Image Convert is simpler; this tool is for volume.

Parallelism and resuming

Set how many images run at once with the slider: raise it on a fast machine, lower it if the browser stutters. If one file is corrupt and fails, only that one is flagged and the rest continue.

Progress is stored in the browser, so closing the tab or reloading skips finished files and continues with the rest. Queue up hundreds and get on with something else.

Choosing format and quality

WebP is smallest for storage and the web; JPG opens everywhere; PNG suits transparency and text or line art. JPG and WebP quality of 80–90 cuts size with no visible difference.

If pixel dimensions must shrink too, use Image Compress with resizing allowed; for careful one-off adjustments, use the Image Editor.

Frequently asked questions

Are files uploaded to a server?+

No. Processing happens inside your browser and images never leave your device.

How many images can I convert?+

There is no fixed limit; hundreds work. Lower the parallel count if the browser stutters.

What happens if it's interrupted?+

Finished files are skipped and the rest continue, even after closing the tab or reloading.

Does one failure stop everything?+

No. Only the failed file is flagged; the rest keep going.

Which formats are available?+

JPG, PNG, and WebP, with a quality setting.