Signing a contract, stamping a report, adding a photo to a resume, dropping a logo into a document — all of these come down to placing an image at a specific spot on a PDF page. The action itself isn't hard, but a few details separate a clean, professional result from a sloppy one.
Basic steps
- Prepare the image you want to insert (a signature photo, a scanned stamp, a company logo) — PNG or JPG both work fine.
- In your PDF editor, pick the "Insert Image" tool and click where you want to place it.
- Drag a corner to resize, drag the image itself to reposition, and line it up (a signature usually sits just above a "Sign here" line).
- Once it looks right, export or download.
Why a transparent PNG works better for signatures and stamps
If your signature or stamp image has a white rectangular background (common with photos or screenshots), placing it on a PDF will cover up whatever line or table border was underneath it, looking like a sticker slapped on top. The more professional approach is to cut out the background with any background-removal tool (even a phone app works) and export as a transparent PNG — that way only the actual pen strokes or stamp design show up, and the text or line underneath stays visible.
Common issues
- The image looks blurry when enlarged: the source resolution is too low. For signatures, scan at 300dpi or higher, or take a high-quality photo and crop it.
- Inserting several images (photo, logo, stamp) in one document: place and adjust one at a time rather than dropping them all at once — it's easier to keep the layers straight.
- What size should the inserted image be? There's no fixed rule — use the surrounding text's line height as a rough guide; a signature roughly 2–3 lines tall usually looks natural.
LocalPDF's Image tool covers all of this — once inserted, you can re-select, move, resize, or delete it at any time, all processed locally with nothing uploaded.
Got your signature or stamp image ready? Try inserting it now.
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