Document Upload Preflight Checker: Will This File Meet the Portal's Requirements?

Requirements you can set. Maximum or minimum file size (in KB or MB); allowed formats (PDF, JPG, PNG, DOCX, XLSX, PPTX), judged by the file's content and not only its name; minimum and maximum number of pages; paper size (A3, A4, A5, Letter, Legal and others, with a tolerance in millimetres) and orientation; password protection (not allowed or required); a selectable text layer or image-only; minimum and maximum resolution in dpi; width and height in pixels for pictures; no personal metadata (author, creator, last saved by, company, camera); no GPS location; no scripts, attachments or macros; and file name rules (length, plain ASCII, no spaces).

How each result is decided.

• Format: detected from the content (PDF header, JPEG and PNG signatures, Office package structure). A file whose name says .pdf but is a Word document passes no PDF requirement, and a mismatch between name and content is a warning even when allowed.
• Size: exact bytes against the limit; within 5% of it is a warning because portals count kilobytes differently.
• Pages: counted in PDFs and presentations; for Word the page count stored in the document properties is used and labelled as possibly out of date; a spreadsheet has no fixed page count.
• Paper size and orientation: from each PDF page's visible box (after rotation) or the Word page setup; the first deviating page is named.
• Password: a PDF that needs a password to open, a PDF that opens but is encrypted with permissions only (a warning), or none.
• Text layer: up to five pages are sampled for selectable text.
• Resolution: for pictures the density stored in the file; for PDFs the effective resolution of each picture, its pixels divided by the size it is drawn at.

Output. An overall PASS, WARNING or FAIL, a table with the requirement and what was found for every check, suggested tools for failures (compress, resize pages, extract pages, change DPI, remove metadata), and a plain-text summary you can copy.

Read more. The guide Upload requirements checklist explains why portals reject documents and how each condition is measured.

PDF, JPG and PNG (full checks), DOCX, XLSX and PPTX (format, size, pages where stored, metadata, macros), up to 100 MB. Other formats (WebP, GIF, TIFF, BMP, ZIP, old Office files, text) are recognised and checked for format, size and file name only. Password-protected PDFs are recognised; their content cannot be checked.

1. Pick a typical example or set your own requirements: size, formats, pages, paper and so on. Leave a field empty to skip it.
2. Drop your file onto the box. It is checked at once in your browser; change a requirement and the result updates.
3. Read PASS, WARNING or FAIL and the table: each row shows what the portal needs and what your file has.
4. Fix what failed (the page links tools that can help), then check the new file before you upload it.

• Checking an application document before uploading it to a university, visa or job portal
• Finding out why a tax or e-procurement portal rejected a PDF
• Making sure a scan has a text layer, the right paper size and enough resolution
• Checking that a PDF has no password and no attachments before submitting it
• Confirming a photo meets pixel, size and no-location rules

The tool compares your file with the numbers you enter. It cannot know what a given portal really enforces, how it counts kilobytes, or how it reads paper size and resolution, and a PASS is not a promise that any portal will accept the file. Page counts of Word files come from stored properties and can be wrong; the text layer is sampled from up to five pages; picture resolution in a PDF is the effective value of pictures drawn at least 20 points wide, and resolution stored in a JPEG or PNG header describes intended print size, not image quality.

It does not convert, resize or compress anything; it only checks. It is not an official check by any authority.