Overlay onto an Official PDF (W-9)
A technique demo: overlay fields onto the real, official 6-page IRS Form W-9 PDF, compositing only onto the form page while leaving the instruction pages untouched.
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Overlay onto an Official PDF (W-9)
A technique demo showing how to overlay fields directly onto an official,
multi-page government PDF - base.pdf is the real, unmodified 6-page
Form W-9 (Rev. March 2024) from irs.gov. process.js composites the
overlay only onto page 1 (the actual form); pages 2-6 (the IRS's own
instructions) render untouched.
What this demonstrates
- Using a real multi-page PDF as
base.pdfdirectly, withoverlay(file, page)targeting a single page. - Conditional block rendering (
condition) for the seven mutually-exclusive federal tax classification checkboxes. - Cross-field validation (
validate.js) - the form requires exactly one of SSN or EIN.
Legal note
Verify the current revision at irs.gov before use.