FreeDailyPro PDF Tools

Add page numbers to a PDF

Shrink a PDF. Default aims for about 50% smaller: tidies structure first (text untouched), then shrinks pictures only as much as needed. level: auto (default), medium, strong. targetFileSize (such as 2MB or 500KB) is the size to end at, for auto; default is half the original.

Shrink a PDF harder (the site's Aggressive mode): Balanced steps, then pages become pictures at finer and finer steps, converting a page only when that is clearly smaller. Text on converted pages is no longer selectable (textSelectable says which). Slow: several seconds per page; returns the best level finished (truncated: true) if the time budget runs out. Errors if the PDF is unreadable, password-protected, over 100 pages or cannot be made smaller.

Shrink a PDF the gentle way (the site's Balanced mode): tidy the file, empty blank pages, and re-save the pictures inside at about 140 dpi. Text stays selectable; links, bookmarks, form fields and page sizes are kept. Returns the smaller file plus the levels applied. Errors if the PDF is unreadable, password-protected, over 100 pages, or if nothing gets smaller (for example a PDF that is already mostly text); in that case try pdf_compress_aggressive.

Shrink a PDF as far as it will go (the site's Extreme mode): Aggressive steps, then every page as 70 dpi greyscale and as black-and-white JBIG2, keeping the smallest. Colour is lost and text is no longer selectable; in tiny print a letter can rarely be swapped for a look-alike, so check important numbers in the original. Slow; returns the best level finished (truncated: true) on timeout. Errors if the PDF is unreadable, password-protected, over 100 pages or cannot be made smaller.

Shrink a scanned PDF by turning pages into 100 dpi greyscale JPEG pictures: shading and photos are kept, colour is dropped, text on converted pages is no longer selectable. Larger than the black-and-white files but nothing is thresholded to pure black and white. A page is converted only when that makes it at least 10% smaller. Errors (nothing is returned) if the result would not be smaller than the original, or if the PDF is unreadable, password-protected or over 100 pages.

Shrink a scanned PDF by turning pages into pure black-and-white JBIG2 pictures, each page coded exactly as read (no letter is ever swapped; safe for contracts and numbers). Colour and shading are lost and text on converted pages is no longer selectable. A page is converted only when that makes it at least 10% smaller; other pages (for example real-text pages) are copied untouched. Errors if the PDF is unreadable, password-protected, over 100 pages or cannot be made smaller.

Shrink a PDF to a size you need, for example under 2 MB (the site's File size mode). Runs Balanced, Aggressive and Extreme gentlest first and stops at the first that fits; otherwise returns the smallest file with targetMet: false and limitReason. limit caps how far it goes (balanced keeps text selectable). Slow at stronger limits; returns the best level so far (truncated: true) on timeout. A PDF already under the goal comes back unchanged.

Shrink a scanned PDF to the smallest black-and-white file with JBIG2 symbol mode (letter shapes stored once, typically 3x smaller than lossless black-and-white). A letter can rarely be swapped for a look-alike (6 and 8 in tiny print): check important numbers. Colour is lost and text on converted pages is no longer selectable. A page converts only if it gets at least 10% smaller. Errors if the PDF is unreadable, password-protected, over 100 pages or no smaller file results.

Extract specific pages from a PDF into a new PDF

Fill a PDF form's fields — sets text, checkbox, dropdown, radio and option-list values and returns the filled PDF as base64 in the first text item, optionally flattened so it can no longer be edited. Only the fields you name are changed; every other field keeps its value. To clear a field send null (or an empty string). The second text item is a JSON report: fieldsSet, fieldsNotSet (name and reason) and fieldsUntouched

Permanently flatten a PDF's fillable form fields

Merge multiple PDFs into one

Reorder, duplicate, rotate, or insert blank pages in a PDF

Parse a PDF's fillable form fields — lists every fillable field's name, type (text, checkbox, dropdown, radio, optionlist), current value and options so you know what to fill

Permanently redact areas of a PDF. Boxes are fractions (0 to 1) of the page as displayed, measured from the top-left corner, pages numbered from 0. Text characters, picture pixels, vector art and annotations under a box are removed from the file itself and an opaque black bar is drawn; everything outside the boxes stays real, selectable text in its original fonts. A page that cannot be edited exactly (for example a curved drawing partly under a box) is turned into a picture with the boxes painted black instead. Pages without boxes are not touched

Attempt to recover a damaged or corrupted PDF

Rotate PDF pages — 90-degree steps only (0, 90, 180, 270)

Split a PDF into multiple files by page range, or combine specific ranges into one reordered file

Add a text watermark to a PDF