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.

ʻOki i kekahi PDF — Manuahi, ma kāu Polokalamu Kele Pūnaewele, ʻAʻohe Hoʻouka

ʻOki i nā lihi, wehe i ka wahi keʻokeʻo, kūpono i ka maʻiʻo. Auto-detect a i ʻole hoʻonohonoho me ka lima. Hiʻohiʻona ola. ʻAʻohe paywall Adobe Pro.

Drop a PDF — the crop modal opens with a live preview. Click ʻIke ʻakomi i nā lihi maʻiʻo 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.

Hoʻokuʻu i kāu PDF ma ʻaneʻi

a i ʻole

ʻAʻohe pono o ka hoʻouka. Wehe ka modal ʻoki i ka wā e hoʻouka ʻia ai kāu PDF.

Pehea e ʻoki ai i kekahi PDF — ʻAnuʻu ma ʻAnuʻu

1
Hoʻokuʻu i kāu PDF
Drag any PDF onto the dropzone above, or click Koho i ka PDF to browse. The file loads into your browser memory only — no server upload.
2
Kaomi i Auto-detect content margins
Nānā ka modal i ka ʻaoʻao 1 no ka pahu ʻāpana o ka maʻiʻo ʻaʻole keʻokeʻo a hoʻonohonoho i nā lihi e ʻoki paʻa i ka maʻiʻo. Loaʻa i ka hapa nui o nā palapala nā lihi like ma nā ʻaoʻao no laila he hiʻohiʻona pono ka ʻaoʻao 1.
3
A hoʻonohonoho paha i nā lihi me ka lima
E hoʻohana i nā mea pahu ʻehā no nā lihi luna / ʻākau / lalo / hema (0-50% kēlā me kēia). Hōʻike ka hiʻohiʻona ola i ka wahi ʻoki me ka ʻulaʻula i hiki iā ʻoe ke ʻike pololei i ka mea i ʻoki ʻia.
4
Koho i ka ʻāpana: nā ʻaoʻao a pau a i ʻole ka ʻaoʻao o kēia manawa
ʻO ka paʻamau nā ʻaoʻao a pau. Hoʻololi i ka ʻaoʻao o kēia manawa wale nō no nā ʻaoʻao ʻano ʻē hoʻokahi me ka ʻole o ka hoʻololi ʻana i ke koena o ka palapala.
5
Hoʻohana & mālama
Kaomi Apply. Hoʻouka hou ʻia ka PDF i ʻoki ʻia i ka mea hoʻoponopono. Kaomi Save e hoʻoiho. He CropBox palupalu ka ʻoki — hiki ke hoʻihoʻi ʻia ka maʻiʻo kumu ma o ka hoʻonohonoho hou ʻana i ka CropBox ma hope.

No ke aha e hoʻohana ai i kēia Mea Hana ʻOki PDF?

ʻIke ʻakomi i nā lihi maʻiʻo

Ka hiʻohiʻona nui. Hāʻawi i ka ʻaoʻao 1, nānā no nā pixel ʻaʻole keʻokeʻo, hoʻonohonoho i nā lihi e ʻoki paʻa i ka maʻiʻo me kahi padding liʻiliʻi. Kūpono no nā palapala i scan ʻia, slide decks, a me kekahi mea me ka wahi keʻokeʻo a puni.

100% kūloko

ʻAʻole haʻalele kāu PDF i kāu mea hana. Hoʻouka ʻo Adobe (pūnaewele), iLovePDF, Sejda, Smallpdf, PDF24 a pau — ʻaʻole mākou.

ʻOki palupalu, hiki ke hoʻihoʻi

Hoʻonohonoho mākou i ka CropBox ʻaoʻao, ʻaʻole MediaBox. Mālama ʻia ka maʻiʻo kumu; hoʻopilikia wale ka ʻoki i ka wahi ʻike. ʻO ke ʻano hoʻohana ʻo Adobe Acrobat no Edit → Crop. Hoʻihoʻi ka hoʻonohonoho hou ʻana o ka CropBox i ka ʻaoʻao kumu.

Hiʻohiʻona ola

Hoʻonui kēlā me kēia hoʻololi lihi i ka hiʻohiʻona koke me kahi uhi ʻulaʻula ma luna o ka wahi i ʻoki ʻia. ʻAʻohe manaʻo wale.

ʻAʻohe nalowale o ka maikaʻi

ʻAʻole hoʻopili hou ka ʻoki i kekahi mea. Kikokikona, kiʻi, vectors a pau i mālama ʻia me ka maikaʻi piha. Nui o ka faila puka ≈ ka mea komo.

Manuahi, ʻaʻohe kau inoa, ʻaʻohe palena

ʻAʻohe moʻokāki, ʻaʻohe leka uila, ʻaʻohe captcha, ʻaʻohe palena lā, ʻaʻohe watermark.

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

Hiʻohiʻona	PDF Edit	Adobe Acrobat Pro	iLovePDF	Sejda	macOS Preview
Hoʻouka ʻia ka PDF i ka mea lawelawe?	ʻAʻole — 100% kūloko	ʻAe (pūnaewele) / ʻAʻole (pākaukau)	ʻAe	ʻAe	ʻAʻole
Kumu kūʻai	Manuahi	$19.99/month	Manuahi + uku	Manuahi + uku	Manuahi (Mac wale nō)
ʻIke ʻakomi i nā lihi maʻiʻo?	ʻAe	ʻAe (Wehe i nā Lihi Keʻokeʻo)	ʻAʻole	Palena	ʻAʻole
Hiʻohiʻona ola?	ʻAe	ʻAe	Palena	ʻAe	ʻAe
Kēlā me kēia ʻaoʻao a i ʻole nā ʻaoʻao a pau?	Nā mea ʻelua	Nā mea ʻelua	Nā mea a pau wale nō	Nā mea ʻelua	Ma kēlā me kēia ʻaoʻao
Cross-platform?	Kekahi polokalamu kele pūnaewele	Windows / Mac / pūnaewele	Pūnaewele	Pūnaewele	Mac wale nō
Hana ma waho o ka pūnaewele ma hope o ka hoʻouka?	ʻAe	Pākaukau ʻae / pūnaewele ʻaʻole	ʻAʻole	ʻAʻole	ʻAe

ʻO macOS Preview ke koho kūpaʻa maikaʻi loa no ka poʻe hoʻohana Mac. No nā mea ʻē aʻe a pau (Windows, Linux, Chromebook, kelepona), a i ʻole no ka hiʻohiʻona ʻike-ʻakomi ma kekahi Mac, uhi kēia mea hana i ka mea hiki ʻole iā Preview.

Nā Nīnau Maʻamau

Pehea wau e ʻoki ai i kekahi PDF?

Hoʻokuʻu i ka PDF ma ka ʻaoʻao i luna. Wehe ka modal ʻoki. Kaomi i Auto-detect a i ʻole hoʻonohonoho i nā lihi me ka lima. Kaomi Apply, a laila Save.

Pehea wau e ʻoki manuahi ai i kekahi PDF?

E hoʻohana i kēia mea hana — 100% manuahi, ʻaʻohe kau inoa, ʻaʻohe palena lā.

Hiki iā ʻoe ke ʻoki i kekahi PDF?

ʻAe — loaʻa i kēlā me kēia PDF kahi waiwai CropBox e wehewehe ana i ka ʻāpana ʻike. ʻO ka ʻoki ʻana o kekahi PDF ʻo ia ka hoʻonohonoho ʻana i kēlā CropBox ma ka liʻiliʻi. Hana mākou i kēlā i loko o kāu polokalamu kele pūnaewele.

Pehea wau e ʻoki ai i kekahi PDF ma Mac?

ʻElua koho: macOS Preview (e huki i kahi huinahā koho, Tools → Crop), a i ʻole kēia mea hana (nui nā hiʻohiʻona, ʻike-ʻakomi, cross-platform).

Pehea wau e ʻoki ai i kekahi PDF ma Adobe?

Adobe Acrobat Pro: Edit PDF → Crop Pages → huki i ka huinahā → hoʻonohonoho i nā lihi → OK. Kau inoa $19.99/month. Hana kā mākou i ka hiʻohiʻona ʻike-ʻakomi like, manuahi.

E holoi mau ʻia ka maʻiʻo i ʻoki ʻia?

ʻAʻole — ʻoki palupalu. Hoʻonohonoho mākou i ka CropBox, ʻaʻole MediaBox. Mālama ʻia nā palena ʻaoʻao kumu a hiki ke hoʻihoʻi.

Hiki iaʻu ke ʻike-ʻakomi i nā lihi maʻiʻo?

ʻAe. Kaomi i Auto-detect content margins. Nānā mākou i ka ʻaoʻao 1 no nā pixel ʻaʻole keʻokeʻo a hoʻonohonoho i nā lihi e ʻoki paʻa i ka maʻiʻo.

E lilo paha ka maikaʻi o ka PDF i ʻoki ʻia?

ʻAʻole. ʻAʻole hoʻopili hou ka ʻoki i kekahi mea — kikokikona, kiʻi, vectors a pau i mālama ʻia me ka maikaʻi piha.

He aha ka CropBox?

Ka waiwai ʻaoʻao PDF e hoʻomalu ana i ka ʻāpana ʻike i loko o nā mea nānā. ʻO ka hoʻonohonoho ʻana i ka liʻiliʻi ka mea i hana ʻiʻo ʻia i ka ʻoki ʻana o kekahi PDF.

Hoʻouka ʻia kaʻu PDF?

ʻAʻole. Holo ka ʻoki i loko o kāu polokalamu kele pūnaewele ma o pdf-lib.

Aia kekahi palena nui o ka faila?

ʻAʻohe palena hana ʻole.

Hana paha ma ka kelepona?

ʻAe — iPhone Safari, iPad, Android Chrome.

Hana paha ma waho o ka pūnaewele?

ʻAe ke hoʻouka ʻia ka ʻaoʻao.

E pili ana i kēia mea hana: ʻO ka ʻenekini ʻoki ma ʻaneʻi ka mea hoʻohana ʻoki like a kā mākou mea hoʻoponopono e hoʻokuʻu ai — hoʻokuʻu i kāu PDF, wehe ka mea hoʻoponopono me ka modal ʻoki i hoʻāla mua ʻia. Hoʻokahi kumu o ka ʻoiaʻiʻo, ʻaʻohe code ʻoki i pālua. ʻAʻole haʻalele ka PDF i kāu mea hana — hoʻonohonoho ʻo pdf-lib i ka CropBox a pau i loko o kāu polokalamu kele pūnaewele.