Open pdfedit.com/crop-pdf in any browser, drop your PDF onto the page. The crop modal opens automatically. Click Auto-detect content margins or set them with the four sliders. Click Apply, then Save. No account, no upload, no Adobe Pro.

How do I crop a PDF for free?

Use this tool — 100% free, no signup, no daily quota. Drop the PDF, set margins, apply, save. The crop runs in your browser using pdf-lib.

Yes. PDFs have a CropBox property that controls the visible region of each page — every PDF reader respects it. Cropping a PDF means setting that CropBox to a smaller rectangle. We do that in your browser without modifying the underlying content stream, so the original layout can be restored.

How do I crop a PDF on Mac?

Two options: (1) macOS Preview — File → Open the PDF → drag a selection rectangle around what you want to keep → Tools → Crop. Works offline, no install. (2) This tool — drop the PDF here, the crop modal opens, set margins or auto-detect, apply. Useful when Preview isn't available or when you need batch-style margin control.

How do I crop a PDF in Adobe?

In Adobe Acrobat Pro ($19.99/month): Edit PDF → Crop Pages → drag a rectangle on the page → set margins for all pages → OK. Adobe also offers Remove White Margins which auto-detects content. We do the same auto-detect, free, in your browser, no install.

Is this PDF crop tool free?

Yes. 100% free forever — no trial, no premium tier, no per-file charge, no daily quota.

No. The crop runs entirely in your browser via pdf-lib. Your PDF never leaves your device.

Will the cropped content be permanently deleted?

No — this is a soft crop (CropBox). The original page bounds are preserved in the file's MediaBox; the CropBox just defines the visible region. Reopening the PDF in any editor and resetting the CropBox restores the trimmed area. This is the same behaviour Adobe Acrobat's Crop tool produces.

Can I auto-detect content margins?

Yes — click Auto-detect content margins in the modal. We render page 1, scan for the bounding box of non-white pixels, and set margins to crop tight to the content with a small padding. Most documents have consistent margins across pages so page 1 is a reliable sample. Best for scanned documents, slides exported as PDF, and any doc with surrounding whitespace.

Can I crop one page or all pages?

Both. The modal has a scope selector — Apply to all pages (default) or Current page only. The current-page mode is useful for fixing odd one-off pages without altering the rest of the document.

Will the cropped PDF lose any quality?

No. Cropping doesn't re-encode any content — it just sets a smaller visible region. Text stays text, images stay images, vectors stay vectors at full fidelity. The output file size is essentially identical to the input.

What is a CropBox in a PDF?

PDFs have several boxes per page — MediaBox (full physical extent), CropBox (visible region in viewers), BleedBox (print bleed), TrimBox (final trim line), ArtBox (meaningful content). Setting the CropBox is what 'cropping' actually means in PDF terms. Adobe, Preview, and our tool all set CropBox.

Does it work on mobile?

Yes. iPhone Safari, iPad, Android Chrome — any modern mobile browser.

What's the best way to crop a PDF?

For privacy-first cropping with auto-detect and no upload, we believe pdfedit.com is the best free option. On Mac, Preview's built-in crop is a solid offline alternative. For desktop / batch automation, Adobe Acrobat Pro is the gold standard but costs $19.99/month.

PDF Circumcidere — Gratis, In Navigatro Tuo, Sine Impositione

Margines tonde, spatium album remove, ad contentum apta. Auto-detege aut manu pone. Praevisio viva. Sine pariete pretii Adobe Pro.

Drop a PDF — the crop modal opens with a live preview. Click Margines contenti auto-detegere to trim the surrounding whitespace automatically, or use the four sliders for manual top / right / bottom / left margins. Soft crop (CropBox) — same approach Adobe Acrobat uses. Original content is preserved; the crop can be reset later.

PDF tuum hic demitte

vel

Sine impositione necessaria. Modale circumcisionis aperitur cum PDF tuum oneratum est.

Quomodo PDF Circumcidere — Gradus per Gradus

1
PDF tuum demitte
Drag any PDF onto the dropzone above, or click PDF Eligere to browse. The file loads into your browser memory only — no server upload.
2
Auto-detegere margines contenti preme
Modale paginam 1 pro arca terminanti contenti non-albi scrutatur et margines ponit ut arcte ad contentum tondat. Pleraque documenta margines consistentes per paginas habent, ergo pagina 1 exemplum fidum est.
3
Aut margines manu pone
Quattuor cursoribus pro marginibus superi / dextri / inferi / sinistri utere (0-50% quisque). Praevisio viva aream tonsam rubro ostendit ut accurate videre possis quid tonsum sit.
4
Ambitum elige: omnes paginae aut pagina currens
Defectus est omnes paginae. Ad paginam currentem tantum muta pro paginis singulariis sine reliquum documentum mutando.
5
Applicare et servare
Applicare preme. PDF circumcisum in editorem rursus oneratur. Servare preme ut descendas. Circumcisio est CropBox mollis — contentum originale postea restitui potest CropBox restituendo.

Cur Hoc PDF Instrumento Circumcisionis Uti?

Margines contenti auto-detegere

Proprietas eximia. Paginam 1 reddit, pixelos non-albos scrutatur, margines ponit ut arcte ad contentum cum parva fartura tondat. Perfectum pro documentis scannatis, fasciculis pelliculae, et omnibus cum spatio albo circumiacenti.

100% localiter

PDF tuum numquam machinamentum tuum relinquit. Adobe (web), iLovePDF, Sejda, Smallpdf, PDF24 omnes imponunt — nos non.

Circumcisio mollis, reversibilis

CropBox paginae ponimus, non MediaBox. Contentum originale conservatur; circumcisio modo regionem visibilem angustat. Eadem ratio qua Adobe Acrobat utitur pro Edit → Crop. CropBox restituere paginam originalem reddit.

Praevisio viva

Quaeque adaptatio marginis statim praevisionem cum tegmine rubro super aream tonsam renovat. Sine coniectura.

Sine qualitatis amissione

Circumcisio nihil re-encodat. Textus, imagines, vectores omnia ad plenam fidelitatem servata. Magnitudo fasciculi exitus ≈ ingressus.

Gratis, sine subscriptione, sine limine

Sine ratione, sine litteris electronicis, sine captcha, sine quota cotidiana, sine signo aquae.

Crop PDF vs Adobe Acrobat, iLovePDF, Sejda, macOS Preview

Proprietas	PDF Edit	Adobe Acrobat Pro	iLovePDF	Sejda	macOS Preview
PDF in servorum impositum?	Non — 100% localiter	Sic (web) / Non (desktop)	Sic	Sic	Non
Pretium	Gratis	$19.99/month	Gratis + pretiosus	Gratis + pretiosus	Gratis (Mac tantum)
Margines contenti auto-detegere?	Sic	Sic (Margines Albos Removere)	Non	Limitatum	Non
Praevisio viva?	Sic	Sic	Limitatum	Sic	Sic
Per-paginam vel omnes-paginas?	Utrumque	Utrumque	Omnes tantum	Utrumque	Per paginam
Trans-platformum?	Quilibet navigator	Win / Mac / web	Web	Web	Mac tantum
Operatur sine rete post oneratum?	Sic	Desktop sic / web non	Non	Non	Sic

macOS Preview est optima ratio inserta usoribus Mac. Ceteris (Windows, Linux, Chromebook, mobilibus), aut pro proprietate auto-detectionis in Mac, hoc instrumentum quod Preview facere non potest complectitur.

Quaestiones Frequenter Rogatae

Quomodo PDF circumcido?

PDF in pagina supra demitte. Modale circumcisionis aperitur. Auto-detegere preme aut margines manu pone. Applicare preme, deinde Servare.

Quomodo PDF gratis circumcido?

Hoc instrumento utere — 100% gratis, sine subscriptione, sine quota cotidiana.

Potesne PDF circumcidere?

Sic — quodlibet PDF habet proprietatem CropBox quae regionem visibilem definit. Circumcidere PDF significat illam CropBox minorem ponere. Hoc in navigatro tuo facimus.

Quomodo PDF in Mac circumcido?

Duae optiones: macOS Preview (rectangulum selectionis trahe, Tools → Crop), aut hoc instrumentum (plures proprietates, auto-detectio, trans-platforma).

Quomodo PDF in Adobe circumcido?

Adobe Acrobat Pro: Edit PDF → Crop Pages → rectangulum trahe → margines pone → OK. $19.99/month subscriptio. Nostrum eandem proprietatem auto-detectionis facit, gratis.

Eritne contentum circumcisum perpetuo deletum?

Non — circumcisio mollis. CropBox ponimus, non MediaBox. Limites originales paginae conservantur et restitui possunt.

Possumne margines contenti auto-detegere?

Sic. Auto-detegere margines contenti preme. Paginam 1 pro pixelis non-albis scrutamur et margines ponimus ut arcte ad contentum circumcidamus.

Amittetne PDF circumcisum aliquid qualitatis?

Non. Circumcisio nihil re-encodat — textus, imagines, vectores omnia ad plenam fidelitatem servata.

Quid est CropBox?

Proprietas paginae PDF quae regionem visibilem in spectatoribus regit. Eam minorem ponere est quod circumcidere PDF re vera significat.

Estne PDF meum impositum?

Non. Circumcisio totum in navigatro tuo per pdf-lib operatur.

Estne limen magnitudinis fasciculi?

Nullum limen artificiale.

Operaturne in mobili?

Sic — iPhone Safari, iPad, Android Chrome.

Operaturne sine rete?

Sic postquam pagina onerata est.

De hoc instrumento: Machina circumcisionis hic est EADEM circumcisionis instrumentum quo praecipuus editor noster utitur — PDF tuum demitte, et editor aperitur cum modali circumcisionis iam activo. Unus fons veritatis, nullus codex circumcisionis duplicatus. PDF numquam tuum machinamentum relinquit — pdf-lib CropBox totum in navigatro tuo statuit.

Last updated: 2026-05-01