Processing 100 files at once — without uploading any of them

Doing something to one file is easy everywhere. The painful jobs are plural: compress every photo from an event, convert a folder of HEICs the office can't open, strip location metadata from 60 images before publishing them.

Batch mode

The Batch page takes any browser-side tool on this site and runs it across as many files as you drop in:

1. Pick the tool (say, Compress Image or Convert Image).
2. Drop in the whole folder's worth of files — or import them straight from Dropbox, Google Drive or OneDrive.
3. Get one ZIP back with every processed file.

Because the tools run in your browser, a hundred files means zero uploads — nothing queues on a server, nothing counts against a quota, and nothing sensitive leaves your machine. Speed is limited by your own computer, which for images and PDFs is usually seconds per file.

Chaining steps with Workflows

Some jobs are pipelines, not single steps: resize → watermark → convert to WebP, or remove EXIF → compress. The Workflows page lets you chain browser tools so each step's output feeds the next, then save the chain under a name and re-run it whenever the same job comes back. The recipes live in your browser's storage.

Three batch jobs worth stealing

• Publishing photos: Remove Image Metadata first — photos carry GPS coordinates of where they were taken — then compress.
• Email attachments: batch-compress PDFs so the whole set fits under the mail server's 25MB cap instead of sending four separate emails.
• Migrating formats: a folder of old BMP/TIFF/HEIC images → WebP or JPG in one pass, one ZIP out.

For server-side conversions (video, Office formats), batch works too — files are processed in a queue and cleaned up after about an hour.