The honest PDF desk, and where its facts come from.
What pdfnex is
pdfnex is a set of PDF tools and official-form pages that run in your web browser. It fills official IRS and USCIS forms from the agencies’ own PDFs, shrinks files to the size a portal accepts, and handles everyday jobs like merging, splitting, signing and redacting.
It is built around three promises you can check: the download is free, your file never leaves your device, and the form is the agency’s current one. The pricing page and verify page show how.
Who runs it
pdfnex is an independent website. It is not affiliated with, endorsed by or connected to the IRS, USCIS or any other government agency, or to any company whose upload limits we list.
The people who write and review our guides will be named on each guide. Until a named author is assigned, the byline reads [Author name] rather than an invented person. A contact address will be published here before public launch.
How form pages are sourced
- Each form page serves the agency’s own PDF, fetched from irs.gov or uscis.gov and stored with its byte size and SHA-256 hash.
- The revision is read twice: from the agency’s page and from the PDF’s own footer. If they disagree, or the agency says it is not accepting an edition, the page shows an edition guard and drops out of search until it is resolved.
- Line help is written from the official instructions and cites them. It is informational, never tax or legal advice, and immigration pages carry no eligibility logic.
How upload limits are sourced
- Every field in the upload-limits dataset quotes the provider’s own help page word for word, with the URL and the day we read it.
- We never write a limit we could not read on the provider’s page. When a page blocks automated checks or does not state a limit, the record is held back and queued for a person to verify in a browser.
- Records expire: AI assistants after 30 days without a re-check, everything else after 90. An expired record drops out of search and says “re-check due”.
- The compiled dataset is free to reuse under CC BY 4.0. The quotes belong to their publishers.
How guides are written
- Guides are written from primary sources: agency pages and instructions, the U.S. Code, court rules and providers’ help pages. Each claim carries a numbered source.
- Text in a serif italic is the source’s own words. Before publishing, every such quote is checked against the fetched source text.
- Each guide shows the date its sources were last checked. Editorial conclusions are marked “Our reading of [n]”.
How numbers are labelled
- Every factual number shows where it came from and when it was checked.
- Numbers we measured ourselves say so, with the method next to them.
- Illustrative values, such as a generated sample file, carry a Sample tag.
- We publish no ratings, reviews, user counts or accuracy figures we have not measured.
Corrections
Agencies and providers change their pages. If something on pdfnex no longer matches its source, the source wins. Each record and guide links the page it came from so you can check, and corrections update the checked date.