Vocabulary, quickly

Step by step

1. Define the color legend. Yellow = question, green = approved, red = blocker, orange = needs revision. Keep it to four colors; more colors invite drift.
2. Specify RGB and opacity. Yellow #FFEB3B at 50% opacity, green #4CAF50 at 30%, red #F44336 at 40%, orange #FF9800 at 40%. Reviewers paste the codes into their editor presets.
3. Distribute a legend page. One-page PDF with each color, its meaning, and the RGB / opacity values. Send with every review document; do not assume reviewers remember.
4. Lock the editor palette. In Adobe Acrobat, in macOS Preview, in Foxit, save the four colors as "favorites" on the highlight tool. Reviewers pick from the locked palette, not free-choose.
5. Highlight with intent. Highlight the exact text, not a paragraph block; add a sticky note for context where the highlight alone is ambiguous.
6. Export annotations as FDF per reviewer. Each reviewer exports their FDF and sends it back; document owner imports all FDFs into a clean copy of the original.
7. Filter the comment list by color. Open the comments panel, filter to red, export as PDF or CSV. The digest is what the document owner reviews first.
8. Resolve and archive. Mark each comment as resolved (or wontfix) as you go; the final archive shows the marked-up file plus the digest with disposition.

Review-workflow checklist

• Every reviewer has the locked palette installed before the review starts — confirming after the fact does not undo color drift.
• Highlights cover exact text ranges, not entire paragraphs; broad highlights make the digest noisy.
• Sticky notes accompany ambiguous highlights so the document owner does not have to guess the reviewer\'s intent.
• Comment author field is populated correctly — anonymous comments break the audit trail and the comment-by-author filter.
• The digest is filtered by color and exported before the document owner reads the marked-up file; reading order matters for processing speed.
• Resolved comments are marked as resolved (most editors support this), not deleted; deletion loses the history.

Related reading and tools

• Adding form fields and interactive annotations
• Signing reviewed PDFs
• Accessible alternatives when color alone carries meaning
• Linking to reviewer email for clarifications
• Combining marked-up PDFs with screenshots
• All ScoutMyTool PDF tools

FAQ

Why do my green highlights show up as olive in someone else's reader?

Different PDF readers apply different default opacity to highlights, so an annotation set at full green from a tool that uses 100% opacity displays as muted olive in a tool that defaults to 50%. Fix by setting opacity explicitly per annotation, not relying on the default. Most editors expose opacity in the annotation properties panel.

How do I keep highlight colors consistent across reviewers?

Distribute a one-page color legend with the document and use the editor's "saved tool" feature so each reviewer has yellow, green, red, orange preset with identical RGB values. Free-typing the color name does not work — reviewers pick different shades and the digest looks chaotic. Lock the palette before review starts.

Can I export only the red (blocker) highlights as a digest?

Yes. Most PDF editors have a comments-list view that filters by color, by author, or by date. Filter to red, then export the filtered list as PDF or CSV. The digest is what the document owner reviews; they do not need to open the full marked-up file to find blockers.

My reviewer used a different reader that does not support highlight notes. Are their notes lost?

Only if the reader stripped the annotation type entirely. Most modern readers (Adobe, macOS Preview, Foxit, mobile PDF apps) preserve highlight annotations even if they cannot edit them. If you receive a marked-up file without notes you expected, ask the reviewer to re-send and confirm their editor save-as did not drop the comments layer.

How do I combine annotations from five reviewers into one file?

Use the editor's "import comments" feature with FDF or XFDF files. Each reviewer exports their annotations as FDF; the document owner imports all five FDFs into a fresh copy of the original PDF. This is cleaner than merging marked-up PDFs, which often duplicates the underlying text and confuses the comment author attribution.

Will the highlights survive an OCR pass?

Yes if you run OCR before highlighting. If you OCR after highlighting, the OCR tool may re-rasterize the page and either drop the annotations or fix them in place permanently. Best practice: OCR first, then annotate, then export.

Citations

1. Wikipedia — “PDF — annotation types and tools.” en.wikipedia.org/wiki/PDF
2. Wikipedia — “Forms Data Format (FDF / XFDF).” en.wikipedia.org/wiki/Forms_Data_Format
3. Wikipedia — “Color code — visual signaling conventions.” en.wikipedia.org/wiki/Color_code