OmniDocWhat are the electronic signature methods: analysis of several common methods
There are four common types of electronic signatures: handwritten signature pictures, drawn signatures, input signatures and signature requests. This article explains various practices, applicable scenarios and areas of confusion, and lists the signature methods currently supported by OmniDoc.
Key points of this article
- There is no unified method for electronic signatures. The four common types are handwritten signature pictures, drawn signatures, input signatures and signature requests.
- For documents that you confirm by yourself, you can use pictures or input signatures; if multiple people need to sign in sequence, it is more suitable for signature requests.
- Electronic signatures are a major category, and digital signatures (based on certificates) are one of them. The verification methods of the two are different and the concepts cannot be mixed.
- The signature pattern itself cannot prove identity. The credibility depends on the signature process, document retention and whether the other party recognizes it.
- OmniDoc's PDF editor supports signatures, and the signature request supports letting others sign online. Certificate-type signatures need to be confirmed first.
When many people search for "How many electronic signature methods are there", they usually have a PDF or Word contract to sign, but they are not sure how to sign it, and they don't know whether different methods are valid. There is no unified operation for electronic signatures. Common ones include handwritten signature pictures, drawn signatures, input signatures and signature requests. They are suitable for different scenarios.
This article only talks about the method itself: what each category is, how it works, where it is easy to mix them up, and what OmniDoc currently supports. After reading it, you can judge which one should be used for your own documents, and you can also distinguish the difference between "adding a signature to the document" and "going through a set of signing procedures."
There are several electronic signature methods. Which one is suitable for you? One sentence conclusion
One sentence conclusion: For documents that you confirm yourself, it is enough to use pictures or input signatures; if you need someone else to sign, use a signature request; if the other party has clear requirements for identity authentication or tamper-proofing, ask first which form is accepted before taking action.
| your situation | Recommended practices | reason |
|---|---|---|
| Just confirm an internal document yourself | Typed signature or handwritten signature picture | There are few steps, just save it directly after signing. |
| I have a paper signature and want to put it on PDF | Handwritten signature picture | Preserve personal handwriting, visually close to traditional signature |
| Multiple people need to sign the same contract in sequence | Initiate a signing request | Send the documents to the other party to sign online, eliminating the need to send them back and forth. |
| The other party requires a signature with a digital certificate | Confirm the other party's requirements first, and then select specific services. | Digital signatures are generated and verified differently than image signatures |
| The contract involves legal effect | Subject to the contract and relevant laws, consult professionals if necessary | Whether the signature form is valid depends on specific conditions |
What are the common methods?
Handwritten signature picture
Take a photo or scan of the signed name on the paper, cut out the signature part, save it as a clear picture, and then insert it into the corresponding position of the PDF. It retains your actual handwriting. The light should be even when shooting, and the background of the signature should be as clean as possible, otherwise background colors and shadows will appear after insertion.
Draw signature
Write your signature directly on the screen with your mouse or stylus. It is suitable for situations where there is no paper signature on hand and you need to complete it on the computer at once. The stability of handwriting will affect the effect. You can try it a few times before confirming.
Input signature
Enter your name and choose a font to create a signature style. It operates quickly and is suitable for internal processes or scenarios where only "confirmed" needs to be marked. Its disadvantage is that the font is uniform and does not look like personal handwriting. It does not apply if the other party explicitly requires me to write it in handwriting.
Signing request (multiple parties sign online)
Send the document to the other party and the other party will complete the signature online. Strictly speaking, it is a set of processes, not a signature graphic: the initiator is responsible for sending, the signer is responsible for signing, and multiple people can proceed in sequence. Documents such as contracts and confirmations that need to be signed by multiple people usually use this method.
Easily confused
Electronic signature is not equal to digital signature
Electronic signature is a broad category that generally refers to various practices that express the intention of signing in electronic form. The above four categories all belong to it. Digital signatures usually refer to signatures based on digital certificates and encryption technology, which can be used to verify the identity of the signer and detect whether the file has been altered. The two are not the same concept. It is a common misunderstanding to interpret "an electronic signature" as "must be protected by a digital certificate".
China's "Electronic Signature Law" sets conditions for "reliable electronic signatures", and ordinary picture signatures may not meet all conditions. Whether a signature is valid depends on the usage scenario, the agreement between the parties, and relevant legal requirements. It cannot just depend on whether the signature looks formal.
The signature pattern itself cannot prove identity.
Anyone can copy and paste the same signature picture, so whether the pattern looks good or not does not mean it is trustworthy. Credibility mainly comes from the process under which the signature was completed, whether the document is retained, and whether the other party recognizes this form.
The signature location and file version must be consistent
If the signature is placed on the wrong page, or the content is changed after signing, it may cause disputes. It is recommended to confirm that the content has been finalized before signing, save a final version after signing, and check the signature position and page number.
📊 Core comparison
| Way | Where does the signature come from? | Suitable for the scene | Main points to note |
|---|---|---|---|
| Handwritten signature picture | Take photo or scan of paper signature | Personal confirmation, handwriting needs to be retained | The picture should be clear and the background should be as clean as possible |
| draw signature | Write directly on the screen | Temporary confirmation without paper signature on hand | The handwriting may be unstable, please try a few more times |
| input signature | Enter name and choose font | Internal process, simple confirmation | The font is uniform and does not represent my own handwriting. |
| sign request | The other party completes the signature online | A contract or confirmation signed by multiple people | To confirm that the other party has received and completed the signature |
| Digital signature (certificate) | Generate based on digital certificate | Scenarios that require identity authentication and tamper resistance | Support and verification methods need to be confirmed separately |
How to use it in practice
Below is what OmniDoc currently supports. Other methods can be completed using general tools according to the above ideas.
Sign a PDF (using the desktop client's PDF editor):
- Download and open the OmniDoc desktop client, and load the file to be signed in the PDF editor.
- Use the signature function to select a prepared handwritten signature image, or directly generate a signature and place it in the corresponding location.
- Check the signature position and page number, save and export it as a new file after confirming it is correct, and keep the backup of the original file.
Initiate multiple signatures:
- Prepare the PDF that needs to be signed and confirm that the content has been finalized.
- Send the file through OmniDoc's signature request function, and the other party will complete the signature online.
- Save the final version after signing.
OmniDoc's Sign Request is used to let others sign online. If the other party requires a digital certificate signature, this is not covered in the current function description. Please confirm the requirement with the other party first.
❓ Frequently Asked Questions (FAQ)
1. How many electronic signature methods are there?
Commonly divided into four categories: handwritten signature pictures, drawn signatures, input signatures and signature requests. Digital certificate signatures also belong to the category of electronic signatures, but they require the support of a separate certificate. You must first confirm whether the other party accepts it before using it.
2. What software can be used for electronic signature methods?
You can choose by category: PDF editor in desktop office software, online signing website, etc. When choosing, look at the file size limit, whether to add a watermark, whether to retain the original layout, and the privacy policy. The OmniDoc desktop client's PDF editor supports signing and form filling.
3. How to create a picture of the electronic signature method?
Sign with pen and paper, then take a photo or scan, crop out the signature area, save it as a clear picture, and then insert it into PDF. If you need a transparent background, you can use general picture software to remove the white background.
4. Are picture signatures legally binding?
Whether it is valid depends on the signature form, usage scenarios and mutual agreement. China's "Electronic Signature Law" has conditional requirements for reliable electronic signatures. For important contracts, it is recommended to consult professionals and the contract shall prevail.
📝 Summary
There is no unified answer for electronic signature methods. Handwritten signature pictures, drawn signatures, input signatures and signature requests each have applicable scenarios. It is more useful to first look at the purpose of the file and the other party's requirements, and then choose the specific method than simply comparing software.
