Crop PDF — Trim Pages Online
Crop the visible area of PDF pages.
Drop your PDF file hereTap to select a file
Supports PDF, up to 200MB
What to do next
Related tools
About Crop PDF
Crop PDF is a PDF tool that runs in your browser. Crop the visible area of PDF pages. The page you are reading is the same workspace you will use to do the work: pick a file or paste your input, choose the options that matter to you, and the tool produces the result on your device.
Reach for Crop PDF when you need a predictable result on a single file. The page works on the first visit, the controls are visible without a menu, and the output is delivered the moment the engine finishes.
Crop PDF parses your file with the open-source pdf-lib JavaScript library entirely inside the browser, applies the options you selected, and returns a download. The processing has no network step, which means a slow or intermittent connection does not slow down the work — once the page is loaded, only your CPU and RAM are involved.
Technically, the work is done by the open-source pdf-lib JavaScript library, loaded as part of the page. Inputs in PDF format are recognised automatically and validated before the engine begins processing. Files up to 200 MB are supported per run; that ceiling keeps browser memory usage stable on a wide range of devices.
The only practical limit is the 200 MB per-file ceiling, which keeps the tool responsive across a wide range of devices. Run the tool ten times in a row, run it ten thousand times — it behaves the same way and produces the same quality of result.
The heaviest users of Crop PDF tend to be legal teams preparing exhibit bundles, students assembling reading packets and researchers archiving reference papers. Each group brings slightly different expectations to the tool, but the same single-page architecture serves every one of them with the same response time.
The output handed back by Crop PDF is `{name}-cropped.pdf`. If you would prefer to keep the result in the browser instead of downloading it, you can copy it from the result panel and paste it directly into another tab — useful when the next tool in your workflow expects pasted text rather than a file.
As a workflow component, Crop PDF is the part you reach for when a single, well-defined PDF document workflow step needs to happen. It performs that step and returns a standard file you can carry into the next part of your pipeline.
Crop PDF is built around steady iteration on a small set of options rather than feature creep. Every additional setting attracts a slightly different audience, but a long settings panel makes the common case slower for everyone. The current controls reflect what users of the tool actually use.
Some context on why Crop PDF exists in this form: modern File APIs, high-performance JavaScript engines, and well-maintained open-source libraries now make it possible to perform PDF document workflow work entirely in the browser. Crop PDF is built on top of that capability, which is why a single page can host the full pipeline.
If you also use a command-line tool for crop pdf, Crop PDF is a convenient alternative for the times you are on a different machine or helping someone who is not comfortable in a terminal. The output is a standard file in the format documented above.
Useful patterns when working with Crop PDF: keep the input file open in another tab so you can compare against the result; give the output file a descriptive name when saving so you can find it later (the default name is sensible but generic); and treat each run as independent — the tool has no concept of "history", which means you cannot accidentally pollute one job with leftovers from another.
If Crop PDF appears to hang, the engine is almost certainly still working — large inputs simply take longer to process inside a browser than they would on a server with multi-core scheduling. For inputs near the 200 MB cap, give it up to a minute on a typical laptop before assuming something is stuck.
Crop PDF is one of many single-purpose tools in the catalog. Each is built around the same single-page model. Use this one, close the tab, and come back the next time you need the same job done. None of the tools require prior knowledge of the others — each page is self-contained.
How it works
- 1Open the Crop PDF workspace above. The interface is a single page, so there is nothing to navigate.
- 2Add your PDF input by dropping it onto the page or browsing for it.
- 3Pick any non-default settings you need. Most users leave the defaults alone for the first run and only revisit if the result needs tuning.
- 4Click to start the job. The engine (the open-source pdf-lib JavaScript library) processes the input in the page; you can watch the progress indicator until it completes.
- 5Download the result as `{name}-cropped.pdf`. The file is generated in your browser and saved through your normal download flow.
- 6Re-run with different settings as often as you want. Each run produces a fresh output and the original file on disk is never modified.
Common use cases
- Strip blank or test pages from a scanned document using Crop PDF.
- Extract a specific signed page from a long contract bundle.
- Convert a bundle of flyers into a single archival PDF.
- Lock a confidential document with a password before sharing externally.
- Split a 200-page exhibit bundle into one PDF per exhibit.
- Reorder pages of a multi-chapter scan into the correct reading order.
- Combine a set of references into a single application packet.
- Shrink a scanned invoice so it fits past an email gateway.
FAQ
How does PDF cropping work?
Draw a crop rectangle on the page preview, then apply it. Content outside the area is hidden (not deleted).
Can I crop different pages differently?
You can apply the crop to all pages or select specific pages.
Can I undo the crop?
Cropping adjusts the visible area. The hidden content still exists in the file and can be recovered with other tools.
Does Favtoo keep a copy of files I process with Crop PDF?
Favtoo keeps no copy of your file because Favtoo never receives your file. Crop PDF runs entirely in your browser, the input is held only in your tab's memory, and closing the tab discards it. There is no opt-in cloud history, no "recent jobs" panel synced to an account, and no server-side retention to configure — the architecture simply has nowhere for your file to be stored.
Does Crop PDF ask for any browser permissions?
Crop PDF only needs the standard web platform — file picker access for the inputs you choose to load, and optionally clipboard access if you copy the result rather than downloading it. There is no microphone, camera, geolocation or background-permission request, because none of those are needed for the work the tool does.
Is Crop PDF lossless?
Crop PDF is built to preserve quality wherever the underlying PDF format allows it. Operations that are mathematically lossless (e.g. structural transformations, lossless re-encoding) round-trip with no perceptible change. Operations that involve a lossy codec inevitably introduce small artefacts at the byte level, but the defaults aim at the sweet spot where output looks or sounds the same to a normal viewer or listener while still being meaningfully smaller or faster than the input.
Will Crop PDF keep working if my Wi-Fi drops mid-task?
Once the page is loaded, Crop PDF can complete jobs without an active internet connection — the engine is bundled with the page, so there is no per-job network call. The initial page load does require a connection (to fetch the static assets), but after that you can disconnect entirely and the tool will still work. This is a side-effect of the local-first architecture, not a deliberate "offline mode" feature.
Can I process multiple files at once with Crop PDF?
Crop PDF processes one input at a time by design — it keeps memory usage predictable on lower-end devices and makes results easier to verify. To handle a folder, run the tool once per file; the page stays loaded between runs and remembers your last-used settings, so the second run is essentially instant.
How many times per day can I use Crop PDF?
Inputs are capped at 200 MB per file, which keeps memory usage stable across phones, tablets and older laptops. You can run Crop PDF as often as you need; every run produces a full-quality result.
Can Crop PDF run inside a corporate firewall?
Crop PDF is a static page running an open-source engine in your browser, so a typical corporate firewall does not get in the way as long as it allows JavaScript to load from Favtoo. For teams that need to host it themselves on an internal network, the underlying engine (the open-source pdf-lib JavaScript library) is open-source and can be packaged into a private build with the same behaviour. Reach out via the Contact page if that is something you are exploring.
Does Crop PDF upload my file to a server?
Your file is processed inside your browser by the open-source pdf-lib JavaScript library. The engine reads the file's bytes from your tab's memory, computes the result, and writes the result back into the tab. You can confirm what the page does by opening developer tools and watching the Network tab during a run — the requests you see are for the tool's static assets only.