Screenshot AnnotationHighlight a screenshot
like a real marker pen
Highlight a screenshot to draw the eye to the exact text or element that matters. Click a line of text and the highlight snaps to the words themselves — straight, even, and readable through the translucent stroke. Or drag freely to mark anything, anywhere. It behaves like a real highlighter, not a wobbly yellow box.
What does it mean to highlight a screenshot?
Highlighting a screenshot means laying a translucent stroke over text or a region so it stands out at a glance — the digital version of running a yellow marker over a printed line. It’s the lightest-weight way to say “look here first.”
The catch with most editors is that a “highlight” is just a semi-transparent rectangle you draw by hand: it drifts off the text, covers half the line above, and looks sloppy. A highlight that snaps to the actual line of text fixes this — click the line, and the stroke follows the words precisely, one line at a time.
Why highlight instead of boxing?
A solid box around text can hide the words it’s pointing at and feels heavy when several things matter. A translucent highlight draws attention while keeping the text fully readable — closer to how your eye works on paper. That’s ideal for:
- Bug reports — highlight the exact error message line so the engineer reads it first.
- Tutorials & docs — emphasise the one menu item or sentence to act on, without obscuring it.
- Reviews & proofreading — mark the phrase to change in a draft or design.
- Data & tables — pick out a single cell or figure in a dense table.
Snaps to lines, or draws freely
I built the highlight marker myself, so here’s exactly how it behaves.
- Click a line of text to snap. The editor reads the visible text lines on the page. Click a line and a translucent highlight is laid exactly over those words — straight, even, and never spilling onto the line above or below.
- Drag to mark anything. Want to highlight an icon, a button or an empty area? Just drag — a free highlight is always created, whatever you mark and wherever you mark it.
- It’s translucent and always on top. The stroke is semi-transparent so text stays readable, and it layers above boxes and zoom cards — your highlight is never buried.
- Crisp at full resolution. The highlight is rendered on the original capture (including high-DPI pixels), so the edges stay clean on Retina and 4 K displays.
Two behaviours make the highlight feel natural:
- One line at a time — snapping works per visual line, so a wrapped sentence becomes two clean highlights, not one misaligned block.
- Stays on top — the highlight is treated as a label layer, so it renders above rectangles, arrows and zoom cards you place underneath.
Highlighting happens in the in-page editor — no new tab, no upload. Close the editor and the finished image is already on your clipboard.
How to highlight part of a screenshot
From capture to a highlighted image in under a minute.
Capture
Press Alt+A (Win) or ⌘⇧S (Mac), Alt+C / ⌘⇧X for a dragged region, or right-click the page. The editor opens on the page.
Highlight
Press H for the highlight tool. Click a line of text to snap a precise highlight, or drag freely to mark any region.
Export
Close the editor — the highlighted image is auto-copied to your clipboard. Or download as PNG / JPG / PDF.
Tips for clearer screenshot highlighting
- Click lines, drag everything else. Clicking a text line gives a perfect per-line snap; dragging is best for icons, buttons and non-text areas.
- Keep it to one or two marks. A highlight signals “look here.” Three or more compete for attention — switch to numbered steps for multi-point flows.
- Pick a readable colour. Yellow and green read cleanly over dark text; avoid dark highlight colours that obscure the words underneath.
- Combine with a number. Drop a numbered step on a highlighted line so you can refer to it in writing: “see ①.”
Highlight screenshot, answered
Can I still read the highlighted text?
Yes. The highlight is semi-transparent, so the text underneath stays fully legible — that’s the point of a marker over a solid box.
Does the highlight snap to text automatically?
When you click a line of text, yes — the stroke snaps to that visual line’s exact bounds. For non-text areas, drag freely and a highlight is always created.
What if the highlight is over another annotation?
The highlight renders on top — it’s a label layer, so it stays visible above boxes, arrows and zoom cards you’ve placed underneath.
Is the highlight tool free?
Yes. The highlight marker is one of the twelve built-in tools — no paid tier, no watermark, no sign-up.
Written by Virgil
I’m the independent developer who built the highlight marker on this page — including the per-line text snapping and the always-on-top layering. I built it because every “highlight” in other tools was just a hand-drawn yellow rectangle that never lined up with the words.
I read every email and ship updates regularly; the changelog lists what changed in each release. Questions about highlighting? Email virgil1126@gmail.com.
Highlight your next screenshot
Free, no sign-up, no tracking. A marker that snaps to real lines of text.
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