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PDF Crop to Content

Auto-trim PDF page margins by detecting content boundaries. 100% private. 100% private.

100% Private Works Offline Instant

Presets:

Total pages

Page range

Margin threshold (pt): 10

Min crop (pt): 5

Keep margin (pt): 10

Crop plan

Pages in range5

Pages cropped5

Pages unchanged0

Area reduction17.12%

Blank pages detected0

• 10 pt safety margin added around content.

pdf-lib code

import { PDFDocument } from 'pdf-lib';
const doc = await PDFDocument.load(pdfBytes);
const pages = doc.getPages();
pages[0].setCropBox(0, 0, 575.1, 763.2);
// mediaBox offset: left: 20.0, bottom: 20.0, right: 16.9, top: 8.8
pages[1].setCropBox(0, 0, 544.4, 708.6);
// mediaBox offset: left: 43.9, bottom: 43.9, right: 23.7, top: 39.6
pages[2].setCropBox(0, 0, 559.8, 743.3);
// mediaBox offset: left: 27.6, bottom: 27.6, right: 24.6, top: 21.1
pages[3].setCropBox(0, 0, 531.1, 704.8);
// mediaBox offset: left: 45.2, bottom: 45.2, right: 35.7, top: 42.0
pages[4].setCropBox(0, 0, 535.6, 734.6);
// mediaBox offset: left: 39.7, bottom: 39.7, right: 36.7, top: 17.7
const out = await doc.save();

Per-page detail

Page	Orig size	New size	Crop L/B/R/T	Status
1	612×792	575×763	20/20/17/9	cropped
2	612×792	544×709	44/44/24/40	cropped
3	612×792	560×743	28/28/25/21	cropped
4	612×792	531×705	45/45/36/42	cropped
5	612×792	536×735	40/40/37/18	cropped

About PDF Crop to Content

Auto-trim PDF page margins by detecting content boundaries. 100% private. 100% private. Everything runs locally in your browser — your data never leaves your device.

How to use

Enter your input in the tool above.
Adjust any options to your preference.
Use the Copy or Download buttons to save the result.
Everything happens locally — your data never leaves your browser.

FAQ

Is this tool private?

Yes. All processing happens locally in your browser. No data is uploaded.

What extras does this tool have?

Extras: (1) Core function, (2) Batch mode, (3) Copy results, (4) Download, (5) History, (6) CSV export, (7) Custom options, (8) Validation, (9) Warnings, (10) Stats, (11) Multi-format, (12) Configurable, (13) Preview.