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Disabled {{ engineBadge }} {{ pageCountLabel }} {{ signatureBadge }}
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Browse or drop one PDF before placing a visual signature.
{{ hasFile ? selectedFile.name : 'Drop a PDF here' }}
{{ hasFile ? selectedFileSummary : 'Files stay in this browser; no upload request is made.' }}
Choose how the visible signature mark should be created.
Use the name or short mark that should appear on the PDF.
Draw inside the pad, then place the mark on the selected page.
{{ hasDrawnSignature ? 'Drawn signature captured.' : 'Draw a signature before stamping the PDF.' }}
Browse or drop one PNG or JPG signature image.
{{ hasSignatureImage ? signatureImage.name : 'Drop a signature image' }}
{{ hasSignatureImage ? signatureImageSummary : 'PNG with transparency or JPG, up to 5 MB.' }}
Choose the page that should receive the visual signature.
page
Bottom right is common for approval blocks and forms.
{{ normalized.signatureWidth }} pt
Scale the visible signature mark before stamping.
Choose the text printed below the visible signature.
Use a dark color for reliable contrast on scanned forms.
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Fine-tune the signature anchor without changing the base placement.
pt
Fine-tune the signature around existing form fields.
pt
Leave blank to append -signed to the source filename.
Maximum source PDF size for one local signing pass.
MB
Field Value Copy
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PDF page Signature source Placement Anchor Box Label Copy
{{ row.page }} {{ row.source }} {{ row.placement }} {{ row.anchor }} {{ row.box }} {{ row.label }}
Check Status Detail Copy
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Tags: File Tools, Productivity
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A visual PDF signature is a page mark that makes approval, acknowledgement, or review intent visible inside a document. It can be typed text, a drawn signature, or an image of a signature, and it is often used for internal forms, draft approvals, intake packets, and documents that need a visible sign-off before they move to the next person.

The important distinction is that a visible mark is not the same as a certificate-based digital signature. A certificate-backed PDF signature can bind signer identity, document bytes, signing time, and validation evidence. A visual stamp only changes what appears on the page, so the recipient still needs the surrounding process, audit trail, or approved signing system when identity proof or tamper evidence matters.

Visible PDF signature stamping path from source PDF to stamped PDF without a certificate chain

That difference matters most when a PDF will leave a small trusted workflow. A visible stamp can be enough for a draft form, a routing copy, or an attachment where the signer and recipient already share the surrounding record. Use a certificate-based signing product or an approved e-signature service when the document needs long-term validation, a trusted identity certificate, a timestamp, or a tamper-evident approval record.

Visual stamping still needs care. Put the mark on the correct page, size it so it does not cover form text, and inspect the downloaded PDF in a normal reader before relying on it. A PDF can contain rotated pages, unusual page boxes, and existing marks that make a quick placement choice look different after the file is saved.

Technical Details:

PDF pages use a coordinate system measured in points. In the common default user space, 72 points equal one inch, and the origin is at the bottom-left of the page. That is why a 144 pt signature is about two inches wide, and why upward and downward placement is easier to reason about after the page size is known.

A visible signature stamp is drawn into page content. Typed signatures become italic text, drawn signatures become transparent PNG image data, and uploaded signatures are embedded as PNG or JPG image data. The saved PDF is a modified document with visible page content; it does not contain the certificate dictionary, encrypted message digest, revocation evidence, or PAdES profile expected from a certificate-based digital signature.

Stamping Core:

Input path How the mark is built Placement behavior Main limit
Typed signature Signer text is rendered with an italic PDF font and ink color. Text width is fitted to the selected signature width. It is a visible text mark, not identity proof.
Drawn signature The drawing pad is saved as transparent PNG image data. The image is scaled to the selected width and keeps its aspect ratio. A weak or accidental stroke still counts as the visible mark.
Uploaded image One PNG or JPG signature image is embedded into the PDF. Image color is preserved, and the image is scaled by width. Images above 5 MB are rejected before embedding.
Label line Signer name, date, both, or no label is printed below the mark. The label adds height to the stamped box. The label helps review, but it does not create a digital signature.

The anchor is calculated from the selected page size, the stamp box, a 42 pt page margin, the chosen page position, and optional offsets. Positive horizontal offset moves the mark right. Positive vertical offset moves it up. After offsets are applied, the anchor is clamped so the stamp box stays inside the page bounds.

Guardrail Rule User meaning
Source PDF One PDF with a valid PDF header and readable, unencrypted content. Unsupported or encrypted PDFs stop before stamping.
Page cap 500 pages maximum for one browser-side pass. Larger documents are blocked for browser memory safety.
Browser work limit 10 MB to 200 MB, with 75 MB as the default target. Large files can be rejected before the tab spends memory rewriting them.
Signature width 72 pt to 300 pt. Small stamps may be hard to read; large stamps can cover form text.
Fine offsets -240 pt to 240 pt on each axis. Offsets adjust the chosen position without letting the stamp leave the page.
Target page Requested page numbers above the page count resolve to the last available page. Check the target page warning before sharing the output.

Rotated pages deserve a visual check after download. The readiness output can warn when rotated pages are detected, but the final test is still opening the saved PDF and confirming the mark sits on the intended approval area.

Everyday Use & Decision Guide:

Start with one PDF that you are allowed to modify. Keep Signature source on Type a signature for a quick approval mark, switch to Draw on the pad when a handwritten look matters, or use Upload signature image when you already have a clean PNG or JPG.

Use Bottom right for ordinary approval blocks unless the form has a dedicated signature line elsewhere. Set Signature page before changing size, then use Signature width to match the available space. A 144 pt mark is about two inches wide, while the 72 pt to 300 pt range covers small initials through larger approval stamps.

  • Use Signer and date when the stamped copy needs a plain review cue.
  • Use No label when the form already prints the signer name or date near the signature line.
  • Use a dark Ink color for typed or drawn marks on scanned forms.
  • Use Horizontal offset and Vertical offset only after the base position is close.
  • Lower the Browser work limit on weaker devices; raise it only for a capable desktop browser.

A common mistake is treating the downloaded file as a secure digital signature. The Signature model row and Certificate signing readiness check both state that the output is visual page stamping only. If the recipient expects certificate validation, do not use the stamped copy as the final signing record.

The current page is marked disabled for review. Treat Visual Signed PDF Ready as a local creation status, then check Target page, Placement, Signature model, and the downloaded PDF before sending it onward.

Step-by-Step Guide:

Follow the path that matches the signature source, then use the readiness checks and the downloaded PDF to confirm the result.

  1. Choose Source PDF with Browse PDF, drop one PDF into the source area, or use Load sample for a trial run. The summary should change from Choose a PDF to the loaded file name, file size, and page count.
  2. Select Signature source. For a typed mark, fill Typed signature. For a drawn mark, use Draw signature and confirm that the pad says the signature was captured. For an image mark, choose one PNG or JPG under 5 MB.
  3. Set Signature page and Placement. If the warning says the requested page is above the source page count, change the page number or accept that the last page will be used.
  4. Adjust Signature width, Label line, and Ink color. Open Advanced only when the mark needs fine offsets, a specific output filename, or a different browser work limit.
  5. Click Create signed PDF. The status should move through Stamping... and then show Visual Signed PDF Ready when the output bytes are ready.
  6. Review Signature Summary, Signature Placement, and Readiness Checks. Download the PDF only after Source PDF, Visual signature, Target page, and PDF output are resolved.

If creation fails because the source is too large, lower the file size, raise Browser work limit within the 200 MB cap, or split the source PDF before trying again.

Interpreting Results:

Visual Signed PDF Ready means the PDF was rewritten in the browser and can be downloaded. It does not mean the signer was cryptographically verified, the document has a validation chain, or later edits will be detectable by signature validation software.

  • Signature Summary shows source pages, signature source, target page, output filename, output size, and the visual-only signature model.
  • Signature Placement shows the resolved page, source, anchor coordinates, stamp box, and label text.
  • Readiness Checks shows missing runtime support, file limits, missing signature input, page resolution, visual-only signing, and local processing status.
  • JSON keeps the same run evidence in structured form for review or handoff notes.

Do not overread a clean readiness table. Open the downloaded PDF, zoom in on the signed page, and confirm the mark is readable, placed in the intended box, and not covering important text.

Worked Examples:

An internal approval form is 3 pages and needs a quick typed acknowledgement on page 3. With Signature source set to Type a signature, Typed signature set to Ada Lovelace, Signature page set to 3, and Placement set to Bottom right, Signature Summary should show Target page as page 3 of 3 and Signature model as visual page stamp only.

A purchasing form has a narrow signature line near the lower-left corner. A drawn signature at Signature width 120 pt, Placement set to Bottom left, and Vertical offset set to 18 pt should leave Signature Placement with a bottom-left anchor and a stamp box small enough for the form line. The downloaded PDF still needs a visual spot check because the tool cannot know the exact printed box on the form.

A scanned authorization sheet uses a transparent PNG signature image that is 4.2 MB. The image path is accepted under the 5 MB cap, and the uploaded colors are preserved. If the same image is 6 MB, the image is rejected before the PDF is stamped, so resize or compress the signature image and load it again.

A 90 MB PDF fails when Browser work limit remains at the default 75 MB. The readiness table reports the selected size against the current local rewrite limit. Raising the limit to 100 MB can allow the run on a capable browser, but a 501-page source still fails because the page cap is 500 pages.

Responsible Use Note:

A visual stamp can be useful evidence that someone reviewed a PDF, but it should not be treated as the whole approval record for contracts, regulated forms, financial authorizations, or identity-sensitive documents. Use the signing workflow required by the recipient, employer, regulator, or jurisdiction when the signature carries legal or compliance weight.

Keep the original source PDF and any audit notes that prove who approved the document and when. If a recipient asks for a digital signature, PAdES signature, certificate, timestamp, or validation panel, this visual stamping flow does not provide that evidence.

FAQ:

Why is the signer marked disabled?

The current page is intentionally marked disabled for review. The description reflects the available controls and checks, but the publishing state remains disabled until release review approves enabling it.

Does this create a certificate-based digital signature?

No. It creates a visible page stamp from typed text, a drawing, or an image. The readiness checks explicitly state that certificate signing, validation chains, revocation checks, and PAdES profiles are not provided.

Does the PDF leave my browser?

The selected PDF and signature asset are processed in the browser session, and the readiness table reports the privacy path as local. The page still depends on a browser-loaded PDF library, so use an approved internal signing system for highly restricted documents.

Why was my PDF rejected?

The source must be one readable PDF with a valid PDF header, no unsupported encryption barrier, no more than 500 pages, and a size within the current Browser work limit. Check the warning message and lower the file size or adjust the limit when appropriate.

Why did the signature land on a different page?

If Signature page is above the document page count, the resolved target becomes the last available page and a warning appears. Set the page number again after the source PDF page count is known.

What should I check before sending the PDF?

Confirm Target page, Placement, Signature model, and Certificate signing in the result tabs, then open the downloaded PDF and inspect the stamped page at normal and zoomed views.

Glossary:

Visual signature
A typed, drawn, or image-based mark that appears on a PDF page.
Certificate-based signature
A digital signature that uses a digital ID, private key, certificate, and validation data to help verify identity and document changes.
PAdES
PDF Advanced Electronic Signatures, a standards family for certificate-backed PDF signatures and long-term validation profiles.
PDF point
The coordinate unit used for PDF page placement; 72 points equal one inch in default user space.
Anchor
The lower-left coordinate where the visible signature box starts on the selected page.
Browser work limit
The selected source PDF size cap for one local rewrite pass in the browser.

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