Paste Bates ranges, one per line, or drop files to use their names.
Bates Gap Checker
Paste Bates ranges or drop file names. Prefixes with spaces or hyphens, inconsistent padding and start-only names are understood. Get gaps, overlaps and padding problems per prefix, and export CSV.
Or drop files or a folder
Only the names are read, never the contents
Good to know
- This reads the labels you give it. It does not open documents or check the stamps on the pages.
- A start-only name gives one number, so the end of that document is unknown and a gap after it may be a real document's pages.
- Lines it cannot parse are listed, so a clean result only speaks for the lines it understood.
Your files stay on your machine
This tool runs entirely inside your browser tab. Nothing is uploaded, stored, or sent to a server — close the tab and every trace is gone.
These are the free ones — see the full suiteHow big a file can it take?
There is no upload, so there is no upload limit — but the work happens in this tab, which means your browser’s memory is the budget. Nothing here will refuse a file for being large; a big enough one simply gets slow and, eventually, reloads the tab. The figures below are rules of thumb on a desktop browser, not enforced caps. On a phone or tablet, expect a good deal less.
- This is text work, so tens of thousands of lines are comfortable.
- Only names are read when you drop files, never contents.
Password-protected PDFs are declined whatever their size — unlock the file first. If a run does die on a long document, splitting it into volumes and working through them one at a time is the reliable way round it.