In most offices, the problem with stamps is not speed. It is inconsistency. One person uses last year's company seal, another uses a screenshot with a white box around it, and a third places the APPROVED stamp over the signature line. Nobody is quite sure which file is current or who is allowed to use it.
For a typical office, "automating" the seal workflow mostly means removing those decisions. When the approved files, names, permissions, and placement rules are settled once, people stop improvising, and stamping becomes a routine step instead of a small design project each time. This guide sets up that system in practical steps.
Before changing anything, list every stamp currently in use, both physical and digital. For each one, note:
- the exact wording and shape;
- where the file or physical stamp lives;
- who uses it and for which documents;
- who, if anyone, approved the current version.
This list usually turns up duplicates, outdated contact details, and stamps nobody owns. Decide which ones to keep, which to merge, and which to retire. Fewer, clearer stamps are easier to control than a large collection of near-identical ones.
Every stamp you keep should have a single master: the editable source from which all copies are made. When the wording changes, you edit the master and export fresh copies, rather than editing an old PNG or rebuilding the stamp from a scan.
If you design stamps in the , a free account lets you save designs to My Library and reopen them later for edits. Also keep an exported vector file (SVG) in your own storage, so the artwork does not depend on any single person's account. Assign each master an owner, the person who approves changes and knows where the current version is.
The idea of treating every stamp as a controlled master with defined variants is explored further in this piece on .
File names like "stamp final.png" and "stamp final2 NEW.png" are how outdated versions end up on documents. Agree on one naming pattern and use it for every export. A practical pattern includes the organization, the stamp's purpose, the size or variant, the color, and a version number:
acme_approved_40mm_red_v03.pngacme_company-seal_round_blue_v02.svg
Avoid the words "final" and "latest" entirely. A version number and a date in your register tell people which file is current; words like "final" only tell them which file someone once hoped was the last.
Not every stamp needs the same control. Sorting them into a few levels keeps the rules simple:
- Open use: routing and informational stamps such as RECEIVED, COPY, or FOR REVIEW. Anyone in the team can use them.
- Restricted use: stamps that indicate a decision, such as APPROVED, PAID, or VOID. Only named roles should apply them, and only as part of the normal approval process.
- Controlled use: the company seal and any stamp that represents the organization formally. Limit these to a small number of people, and record when and on what they are used.
Write these levels down in a short register next to the inventory. The register does not need special software; a shared spreadsheet that lists each stamp, its level, its owner, and the people allowed to use it is enough for most teams.
Put the approved exports in one shared folder that everyone can find, with three subfolders:
- masters: editable source files, editable only by the owners;
- approved: current PNG and SVG exports, read-only for everyone else;
- retired: old versions, kept for reference but clearly out of use.
For documents, a transparent PNG is usually the most convenient format, because it sits on the page without a white box. SealsDigital exports PNG at 1x, 3x, or 10x; keep a larger size if the stamp will be printed. For printers, sign makers, or stamp manufacturers, keep an SVG or EPS version as well. Restricted and controlled stamps should not sit in the same open folder as everyday ones; use your storage system's permissions to limit who can open them.
Placement is where consistency is most visible. For each document type, define:
- which page the stamp goes on;
- where it goes, for example the blank area to the left of the signature block;
- what size it should be;
- what it must never cover, such as signatures, totals, dates, or form fields.
A one-page reference with a screenshot of a correctly stamped example saves many questions. To place an image on a PDF, you can use the : upload the PDF, place the stamp, resize it, and download the result. Files are processed in your browser and cleared about an hour after use. If your team already uses PDF software that supports stamp libraries, add the approved files there instead. The guide to covers the placement checks step by step.
Once the files and rules are stable, you can consider genuine automation, such as approval routing, batch stamping, or automatic logs of who did what. These features come from your document management, e-signature, or PDF software, if it supports them. Check what your existing tools can do before buying anything new. SealsDigital's role in this workflow is creating the stamp artwork and offering a simple tool for placing it on a PDF.
Keep one limitation in mind: a stamp image does not record who applied it. Exported SealsDigital stamps are visual artwork, not cryptographic digital signatures or electronic seals. If you need proof of who approved a document and evidence that it has not changed since, use a signing system that applies cryptographic signatures, and check the rules that apply to your documents.
A stamp system only stays reliable if changes follow a clear path:
- Someone requests a change, such as a new address or a revised department name.
- The owner edits the master and increases the version number.
- The responsible approver checks the new version at actual size.
- The new export goes into the approved folder, and the old one moves to retired.
- The team is told the date from which the new version applies.
Review the whole register at least once a year, and whenever staff with controlled access leave. Remove access that is no longer needed, retire stamps nobody uses, and confirm that physical stamps are where the register says they are. For more practical workflows, see our other .
Can a stamp be applied automatically to every PDF?
Some document management and PDF tools can apply stamps in batches or as part of an approval flow, so check what your existing software supports. SealsDigital creates the stamp artwork and offers a free tool for placing it on an uploaded PDF. Whatever tool applies it, the approved file and placement rules should come from your own register.
Should we store stamps as PNG or SVG?
Store both. A transparent PNG is the most convenient for placing on documents, while an SVG is a vector file that scales cleanly and is useful for printers and manufacturers. Keep the editable master separate from the exports people use day to day.
Who should own the master stamp files?
Give each stamp a named owner, usually someone in the team responsible for the documents it appears on. The owner approves changes, updates the master, and moves old versions to the retired folder. Controlled stamps such as a company seal often sit with an office manager, company secretary, or finance lead.
Does a stamp image record who approved a document?
No. A stamp image shows a status but does not identify who placed it or detect later changes. If you need that evidence, use a cryptographic signature from a signing system and keep your own approval records.
