Compress, protect, watermark, rotate, number, or flatten dozens of PDFs at once. Nothing leaves your browser.
No account · No daily limit · No file-count limit · Free forever
Each tool below accepts multiple files at once and returns a ZIP with all your results.
Shrink dozens of PDFs at once — pick a preset, batch the rest.
Add the same password to a whole folder of PDFs in one pass.
Stamp "Draft" or a logo across every file in a batch at once.
Fix a whole stack of sideways-scanned pages in one go.
Number a batch of reports or chapters in the same format.
Lock down a whole batch of filled forms before archiving.
Processing files on a server costs the provider money — bandwidth for the upload, compute for the operation, storage while it runs. A single file is a manageable cost. A batch of 50 files is 50x the cost. That's why free tiers cap batch processing hard: most cloud-based PDF tools reserve it for paid accounts, some limit free users to just 1-2 tasks a day, and others require a paid plan for any batch operation at all.
PDFree doesn't have that cost structure. Every file is processed locally in your browser — there's no server doing the work, so there's no per-file cost to recover. A batch of 2 files and a batch of 200 files cost PDFree exactly the same: nothing.
How it actually works: files are processed one at a time, in sequence, inside a single Web Worker — not uploaded, not queued on a server. When the last file finishes, PDFree bundles every result into one ZIP file for download.
Sequential (not parallel) processing is a deliberate choice — it keeps memory usage predictable so large batches don't crash the tab.
| Batch on free tier | Files uploaded? | Price for real batch | |
|---|---|---|---|
| PDFree | Yes — 6 tools, no limit | No | Free forever |
| Most free cloud-based PDF tools | No — paid-only, or capped at 1-2 tasks/day | Yes | $6-20/mo |
Reflects typical free-tier policies among popular cloud-based PDF services; individual providers' terms vary and change over time.
Anyone dealing with document sets larger than "one file at a time" benefits from batch mode: accountants archiving a year of invoices, law firms preparing discovery documents, HR teams processing onboarding paperwork, or insurance teams handling claim files. See our dedicated guides for accountants, lawyers, HR teams, and insurance teams for workflow-specific tips — the batch tools above work the same way regardless of your field.
Yes. PDFree's batch mode runs entirely in your browser using JavaScript — your files are never sent to a server. Open DevTools → Network tab while processing a batch and you'll see no PDF data being uploaded anywhere.
There's no software limit. The practical limit is your device's available RAM — most modern computers handle 50-100+ files without issue. Files are processed one at a time to keep memory usage predictable, then packaged into a ZIP.
No. Many free cloud-based PDF tools cap you at 1 task per hour or 2 tasks per day. PDFree has no daily cap or cooldown — run as many batches as you need.
Compress, Protect, Watermark, Rotate, Page Numbers, and Flatten all support full batch processing. Merge and JPG to PDF also accept multiple files, but they combine inputs into a single output rather than producing a ZIP of separate results.
No. PDFree runs in any modern browser with no installation, no account, and no email required. Open a tool, select your files, and start processing.
Close other browser tabs to free up memory and try again, or split the batch into smaller groups — 20-30 files at a time works well. Compressing image-heavy files first can also reduce memory pressure.
Yes, PDFree works on mobile browsers. Very large batches are more reliable on desktop since phones have less available RAM, but a dozen or so files works fine on most modern phones.
Yes — batch mode is processed the same way as a single file: entirely inside your browser, nothing uploaded. This makes it suitable for contracts, invoices, or medical records, whether you're processing one file or a hundred.