No uploads. No accounts. No watermark on the output. Filoraio lets you draw a crop rectangle on any page or set precise per-edge margins, then download a tight PDF — vector text stays selectable, file size barely changes, and your file never leaves your device.
Filoraio runs the merge directly inside your browser using a small WebAssembly engine. Nothing is uploaded, nothing is queued, and you can verify it yourself — open your browser’s DevTools, switch to the Network tab, and watch it stay quiet.
They’re read into your browser’s memory through a standard file picker.
The merge runs locally — no request leaves your device while it processes.
The combined PDF lands in your downloads folder, the same way any other download would.
No upload bar, no progress spinner waiting on a server. Works offline once the page is loaded.
Cropping a PDF changes which region of each page is visible — the underlying content is preserved. The same approach Adobe Acrobat uses, running locally in your browser.
Drag a PDF onto the picker or click to choose one. The file stays in this tab — no upload, no quota, no account.
Draw a rectangle directly on the page preview by clicking and dragging, OR use the four margin sliders to trim a percentage from each edge. The live preview updates as you adjust either control.
Click Crop. The new crop region is written to every selected page locally, and the cropped PDF downloads to your device — no watermark, no expiry. Opens identically in Acrobat, Preview, Chrome, or any other PDF reader.
Anywhere a PDF has unwanted whitespace, headers, footers, or oversized margins that need trimming before sharing or printing.
Trim the wide margins from journal article PDFs so figures fill more of the screen on a laptop or tablet — easier to read, easier to annotate.
Phone scanners often capture more than the document — desk, hands, lighting. Crop down to just the document itself in seconds, no re-scanning needed.
Adjust the crop box to match a specific print size or aspect ratio. Useful when the source PDF was authored at one page size but needs to ship at another.
Remove case-management headers or filing stamps that the court added to a PDF after the original was prepared — restore the document to its as-drafted appearance for archival.
Crop study materials to focus students on a single passage, problem set, or figure — without re-creating the document from scratch in Word or InDesign.
Tablet and e-reader screens are smaller than letter-size pages. Trim the margins of a PDF so the content fills the device screen without zooming.
Four common reasons people search for a way to crop a PDF — and the exact workflow each one collapses into.
Your scanner captured the page at full bed size, leaving 2 inches of white around every page. Drop the PDF here, set the four margin sliders to ~15% each, and the output shows your scan filling the page with no awkward whitespace.
An e-filed PDF came back with a court stamp added to the top of every page. Draw a crop rectangle that excludes the top 5% of each page, apply to all pages, and download an unstamped version for your archive.
A letter-size PDF on a 10-inch tablet means tiny text. Crop the margins down to almost zero on all four sides — the text reflows visually to fill more of the screen at the same physical size.
A 30-page chapter PDF where only pages 18–20 cover the topic students need. Crop those pages to the specific section + use the page-range selector to apply only to those pages. Email the focused excerpt without rebuilding the document.
Four small habits that turn a quick crop into a polished result — especially when source pages have different sizes or unusual layouts.
The drag rectangle is faster when you can see exactly what to keep. The margin sliders are better when you need precise symmetry (e.g. 'exactly 12% off each side'). Switch freely — the live preview updates either way.
Filoraio expresses crops as percentages so the same setting works across mixed page sizes. A '10% top margin' trim applies cleanly whether the page is US Letter, A4, or a non-standard scan size.
If you also need to rotate pages, do that first (with our Rotate PDF tool), then crop. Cropping before rotating means your crop region rotates with the page, often putting the trim in the wrong place after rotation.
The technical reality: the underlying page content is preserved — only the visible region (CropBox) changes. A determined user with the right tool could expand the CropBox back. For most use cases this is exactly what you want (lossless, recoverable), but for hard removal of sensitive content, use a redaction tool instead.
Side by side with the average online PDF crop tool — including the ones with millions of monthly users.
| Feature | Filoraio | Typical online PDF tools |
|---|---|---|
| Where files are processed | On your device | Uploaded to servers |
| Output type | Vector PDF — text stays selectable | Same (when done right) — but some rasterize |
| Draw rectangle UI | Yes — directly on the page preview | Often paid-tier only |
| Per-edge margin sliders | Yes — both inputs simultaneously | Often only one method |
| Watermark on output | None | Often added on free tier |
| Daily crop cap | Unlimited | Often 2–5 per day |
Quick answers to the things people ask most often before using this tool.
Yes. No account, no email, no daily quota, and no watermark on the cropped output. The page is supported by ads — never the file you download. Crop as many PDFs as you need.
No. The cropping runs entirely on your device using an open-source PDF engine. Your file never leaves the browser tab — important for confidential documents you can't send through a third-party service.
Every PDF page has a 'visible region' definition called the CropBox. Cropping changes that CropBox to a smaller area — the underlying content stays exactly the same, but viewers and printers only display the new region. This is the same approach Adobe Acrobat's 'Crop Pages' tool uses, and it's why the output is lossless and the file size barely changes.
Yes. We modify the page's visible region without touching the content stream — all text, fonts, images, and vector graphics survive untouched. Search, copy, and screen-reader access all work normally on the cropped output.
Both work and you can use them interchangeably. Drag-to-define is most intuitive — click and drag on the page preview to set the crop region. Per-edge sliders are precise — set exact percentages from each side. As you adjust either control, the live preview updates immediately.
Currently v1 applies a single uniform crop to every selected page. Per-page custom crops are a possible v2 enhancement. For most use cases (trimming margins, removing headers), uniform crop is what you actually want — applying it page-by-page gets repetitive fast.
Yes. Switch to 'Specific pages' under the page-range section and enter ranges like '1-5, 8, 12-20'. Only those pages get the new crop; the rest download unchanged. Useful when only certain pages have unwanted content like a header on the cover page.
Yes. The CropBox is part of the standard PDF specification (ISO 32000), supported by Acrobat, Preview, Chrome, Firefox, every mobile reader, and every printing system. The output is a fully portable PDF — no Filoraio-specific format.
Technically yes — because the underlying content is preserved, a PDF editor can expand the CropBox back. But in practical workflows your original PDF on your device is untouched (we produce a new file), so the simplest 'undo' is just to use the original. For sensitive content that must NEVER be recoverable, use a redaction tool instead of crop.
Yes — most modern printers honour the CropBox and print only the cropped region. Some older printers / drivers may print the full MediaBox (uncropped) instead. If your printer ignores the CropBox, run the cropped output through our Compress PDF tool's Visual mode — that rasterizes the result so the crop is baked into the image.
Filoraio handles owner-restricted PDFs (printing/copying locks) automatically — restrictions come off as part of the crop process. For PDFs with user passwords (require a password to open), unlock the file first with our Unlock PDF tool, then crop the unlocked output here.
Yes. Open this page in Safari (iOS) or Chrome (Android), drop your PDF, drag the crop rectangle with your finger (or use the margin sliders), and tap Crop. The new PDF saves directly to Files (iOS) or Downloads (Android).
Only marginally. Cropping changes the visible region but preserves the underlying content, so the bytes are mostly unchanged. If you want to actually shrink the file, run the cropped output through our Compress PDF tool. If you want both — crop + smaller file — visual-mode compression rasterizes the cropped result for big size reductions at the cost of selectable text.
Cropping cuts away part of the visible page (the rest of the page is hidden). Resize changes the page dimensions but scales the content to fit (everything stays, just smaller). For trimming margins or removing unwanted regions, crop is what you want. For changing US Letter to A4, you'd want resize (not currently supported as a standalone tool).
There's no hard cap. Cropping runs in your browser's memory — the practical limit is your device's available RAM. Most browsers handle 100+ MB PDFs without trouble. The crop operation itself is fast (under 1 second for most documents) since we're not re-rendering the page content.
Tools picked because they pair naturally with the one above — the next step in a typical PDF workflow.