Library

PDF tools

Pdf tools is a Netra Code page for people who need clear rules, not a sales script. Merge, rotate, split the first page, and wrap images into a PDF locally with pdf-lib.

pdf tools illustration on Netra Code
Pdf tools — Netra Code

Merge, rotate, split the first page, and wrap images into a PDF locally with pdf-lib.

PDF tools in practice

Read this PDF tools page together with the tool library and the contact details. Outbound policy pages we keep in view include Google Privacy Policy and W3C WAI when the topic is ads or access.

How this PDF tools page is edited

We update the PDF tools when the product changes. We do not invent offices, reviews, or staff. Email corrections rather than posting personal data in a comment.

Does the PDF tools replace the live tools?

No. Calculators stay on their own URLs. This PDF tools text is the policy or explainer layer.

Accuracy for the PDF tools depends on the quality of what you type. Garbage in, garbage out still applies. If you mix units, the PDF tools cannot guess your intent. Re-read the labels, then run it again.

Mobile use of the PDF tools should not require pinch-zooming the buttons. If a control overflows, email the URL. Desktop and phone should show the same method for this Tools tool.

Print or PDF export is not required for the PDF tools. Copy text, or download when the tool offers a file. Do not photograph the screen as your only record if the number matters later.

Language on the PDF tools page is English. Formulas do not change when you translate the labels in your head. Keep the original units.

Netra Code will not add YouTube or Facebook video downloaders next to the PDF tools. Social tools here are counters and drafts.

Accessibility: every PDF tools field should have a visible label. Keyboard users can tab through the form. If a result is only shown as colour, that is a bug — report it.

Performance: the PDF tools should feel instant for ordinary inputs. Huge files are the exception. Close other tabs if a phone runs out of memory on a merge.

Versioning: if the PDF tools method changes, the page copy should say so. We would rather document a simplification than hide it.

Teaching: you can use the PDF tools in a classroom as long as students know it is an estimate. Do not grade someone on a web calculator as if it were a statute.

Slug pdf-tools is the stable URL piece for this PDF tools. Prefer that permalink in internal links so redirects stay simple.

Competitors exist. The reason to use this PDF tools on Netra Code is the labelled method, the related tools, and the fact that we do not upsell a download of someone else’s video.

If you need a human, use the contact email. Include the PDF tools URL and what you typed (never passwords or medical records).

A second pass on the PDF tools is worth doing after you sleep on the first number. People change an input, forget they changed it, and trust a result that no longer matches the story they tell a doctor, a lender, or a client. Write the inputs down next to the PDF tools output if anyone else will see it.

Netra Code keeps the PDF tools on a stable permalink so guides, hubs, and the homepage can point at one URL. If you are documenting a process for a team, link that permalink rather than copying the JavaScript. When the method is updated, everyone who used the link sees the same change.

Finally, the PDF tools is only useful if you understand the unit on each field. A height in centimetres is not a height in inches. A rate in percent is not a decimal. Re-read the PDF tools labels every time you come back after a long break.

Accuracy for the PDF tools depends on the quality of what you type. Garbage in, garbage out still applies. If you mix units, the PDF tools cannot guess your intent. Re-read the labels, then run it again.

Mobile use of the PDF tools should not require pinch-zooming the buttons. If a control overflows, email the URL. Desktop and phone should show the same method for this Tools tool.

Print or PDF export is not required for the PDF tools. Copy text, or download when the tool offers a file. Do not photograph the screen as your only record if the number matters later.

Language on the PDF tools page is English. Formulas do not change when you translate the labels in your head. Keep the original units.

Netra Code will not add YouTube or Facebook video downloaders next to the PDF tools. Social tools here are counters and drafts.

Accessibility: every PDF tools field should have a visible label. Keyboard users can tab through the form. If a result is only shown as colour, that is a bug — report it.

Performance: the PDF tools should feel instant for ordinary inputs. Huge files are the exception. Close other tabs if a phone runs out of memory on a merge.

Versioning: if the PDF tools method changes, the page copy should say so. We would rather document a simplification than hide it.

Teaching: you can use the PDF tools in a classroom as long as students know it is an estimate. Do not grade someone on a web calculator as if it were a statute.

Files

Compress image

JPEG quality slider.

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Files

Resize image

Max width in pixels.

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Files

Grayscale image

Desaturate in the browser.

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Files

Image to WebP

Re-encode as WebP if supported.

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Files

Crop to square

Center square crop.

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Files

Rotate PDF pages

90° all pages.

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Files

Split first PDF page

Keep page 1.

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Files

Images to PDF

Each image becomes a page.

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Files

QR code

Text or URL to QR (your content).

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Files

Favicon size guide

16 / 32 / 180 checklist.

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Files

OG image 1200×630

Cover-crop toward 1.91:1.

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Files

Text watermark

Draw text on your image.

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