Table of contents
Find what takes spaceReduce at the source when possibleCompare measured results instead of predicting a sizeFind what takes space
Check page count, repeated or blank pages, high-resolution photos, and the export preset used by the source application. Text and vector pages can be compact; page count alone does not predict bytes.
Try selecting text, but do not treat that as a definitive scan test: scanned pages can have OCR text, and some vector text is stored as outlines. Keep an untouched copy before editing.
Find out how much you can actually save
Run a duplicate of the file through the Compress PDF tool and compare the result before touching anything else.
Reduce at the source when possible
Use the source application to remove allowed duplicates and resize unnecessarily large images. Follow the recipient’s scan-resolution and color requirements. PDFPixel does not remove pages, perform OCR, or preserve a PDF’s document structure during compression.
PDFPixel compression renders each page into a JPEG and builds a new PDF. It removes searchable text, links, interactive forms, accessibility tags, and cryptographic signatures. A visible signature may remain as pixels but is not a valid digital signature. Text-heavy PDFs may grow. Keep the original and inspect the downloaded copy.
Compare measured results instead of predicting a size
Try Balanced only when page pictures are acceptable. Open the downloaded PDF, compare bytes, and inspect small text. The output may be larger than the original, especially for an efficient text-based PDF. No method guarantees a target such as under 1 MB.
If a portal rejects a file already within its rules, check session expiry, format, filename, and connection. Use a permitted sharing or submission alternative when reducing further would make the content unreadable.
Get your PDF down to a usable size
Compress it, check it, and know exactly why it was big in the first place.
FAQ
Does a high page count always mean a large file?
No. Embedded images, resolution, color, compression, and export settings affect bytes as well as page count.
Can every PDF be reduced below a chosen size?
No. A strict target may require unacceptable loss of detail or document features. Use the recipient’s requirements.