Digital signature API platforms: AI search visibility ranking (2026)
How AI search engines rank digital signature api platforms by visibility and citations. 20 brands measured monthly across Google AI Mode: which brands the AI names in answers, which domains it cites as sources, and how the leaders compare. Digital signature API platforms used by product and legal teams to embed e-signature workflows, automate agreements, and build contract signing into applications. Composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →
Refreshed Jun 18, 2026Download this ranking as a PDF
We'll email it to you. One-off send — no list, no follow-up, no surprise marketing.
At a glance
What we observed in this categoryauto-generated
DocuSign leads the digital signature API platforms category with a visibility score of 37.5%, more than 12 percentage points ahead of SignNow and BoldSign, which are tied at 25.0%. The category average visibility sits at just 5.6%, making DocuSign's position roughly six times above average. This gap is significant because it means AI Mode responses are disproportionately shaped by one brand, leaving the remaining 17 brands largely invisible in generative answers.
A notable divergence exists between visibility and citation across this category. DocuSign, SignNow, and BoldSign each hold 0.0% citation rates despite strong visibility scores, while GetAccept holds 0.0% visibility yet earns a 25.0% citation rate. PandaDoc is the only brand in the top five achieving both metrics simultaneously, with 12.5% on each. This split suggests AI Mode names certain brands without linking to them, while trusting different sources for factual grounding.
Google AI Mode is the dominant engine across all 20 brands in this category, with no brand recording a stronger performance on any alternative engine. The top cited sources include youtube.com, reddit.com, zapier.com, and gartner.com, alongside brand-owned domains like getaccept.com and pandadoc.com. The presence of turbodocx.com and signatureapi.com in the citation list suggests the AI is anchoring on niche comparison and developer-focused content rather than established tech media alone.
Movers & shakers since last refresh
Biggest visibility risers
-
DocuSign 0% → 38% · rank #0 → #1+38pp
-
SignNow 0% → 25% · rank #0 → #2+25pp
-
BoldSign 0% → 25% · rank #0 → #3+25pp
The ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
docusign.com
|
38% | 0% | Google AI Mode |
DocuSign leads with 37.5% visibility, nearly six times the 5.6% category average, but holds a 0.0% citation rate, meaning it is named but never linked. |
||||
| 2 |
signnow.com
|
25% | 0% | Google AI Mode |
SignNow matches BoldSign at 25.0% visibility and a composite score of 17.5, but like DocuSign it earns zero citations, limiting its trusted-source footprint. |
||||
| 3 |
boldsign.com
|
25% | 0% | Google AI Mode |
BoldSign ties SignNow at 25.0% visibility and 17.5 composite score, a strong result for a smaller brand, though its 0.0% citation rate mirrors peers above it. |
||||
| 4 |
pandadoc.com
|
12% | 12% | Google AI Mode |
PandaDoc is the only top-five brand with both visibility and citation at 12.5% each, making it the sole brand in this tier earning named mentions and source links. |
||||
| 5 |
signeasy.com
|
12% | 0% | Google AI Mode |
SignEasy sits at 12.5% visibility with a composite score of 8.8 and zero citations, placing it below PandaDoc in effective AI presence despite equal raw visibility. |
||||
| 6 |
getaccept.com
|
0% | 25% | Google AI Mode |
| 7 |
dropbox.com
|
0% | 0% | Google AI Mode |
| 8 |
adobe.com
|
0% | 0% | Google AI Mode |
| 9 |
onespan.com
|
0% | 0% | Google AI Mode |
| 10 |
yousign.com
|
0% | 0% | Google AI Mode |
| 11 |
zoho.com
|
0% | 0% | Google AI Mode |
| 12 |
foxit.com
|
0% | 0% | Google AI Mode |
| 13 |
signable.co.uk
|
0% | 0% | Google AI Mode |
| 14 |
securedsigning.com
|
0% | 0% | Google AI Mode |
| 15 |
signaturit.com
|
0% | 0% | Google AI Mode |
| 16 |
eversign.com
|
0% | 0% | Google AI Mode |
| 17 |
sertifi.com
|
0% | 0% | Google AI Mode |
| 18 |
box.com
|
0% | 0% | Google AI Mode |
| 19 |
airslate.com
|
0% | 0% | Google AI Mode |
| 20 |
esignatures.io
|
0% | 0% | Google AI Mode |
Sources AI engines trust in this category
Across the 8 buyer-intent queries we ran on digital signature api platforms, these are the domains Google AI Mode cited most often. If you're not on this list — or if your competitors are — that's a concrete PR / linkbuilding target.
How to read this ranking
Four things worth knowing before you act on the numbers above. These are the same definitions across every industry page — for category-specific observations, see the What we observed section above (where available) and the per-brand insights inline in the ranking.
Visibility = being named
A brand's visibility % is the share of AI answers that mention it by name in the response prose. This is who AI engines actively recommend to the buyer.
Citation rate = being trusted
Citation rate is the share of AI answers that include the brand's domain as a clickable source link. This is what the AI treats as authoritative evidence — different from being named.
Top engine differs by brand
The "top engine" column shows which AI surface each brand performs best on. Big gaps between a brand's score across engines usually points to specific content or schema gaps.
Rankings move month to month
AI engines re-crawl and re-rank on shorter cycles than classical search. We re-audit every brand on this list at least every 30 days and refresh this page automatically.
Get your own digital signature api platforms brand audited
The brands above were curated from public market-leader lists. Want the same measurement against your own brand — including the queries you appear on, which competitors get named instead, and a prioritised fix list? Run a free preview.
Frequently asked about digital signature api platforms AI visibility
Who leads AI visibility in digital signature API platforms?
DocuSign leads with 37.5% visibility and a composite score of 26.2, well ahead of SignNow and BoldSign, which are tied at 25.0%. The category average is just 5.6%, highlighting how concentrated AI mentions are around a single brand.
Which brands in this category are cited as sources by Google AI Mode?
PandaDoc and GetAccept are the only brands from this category appearing in the top cited sources list. GetAccept is notable because it holds a 25.0% citation rate despite 0.0% visibility, meaning it is referenced as a source without being named as a product recommendation.
What sources does AI cite most for digital signature API platform research?
The top cited sources are youtube.com, turbodocx.com, reddit.com, zapier.com, gartner.com, getaccept.com, signatureapi.com, and pandadoc.com. This mix of video, community, workflow automation, and analyst content suggests AI Mode draws on diverse content types rather than a single authoritative domain.
Is there a gap between being named by AI and being cited by AI in this category?
Yes, the gap is stark. DocuSign, SignNow, BoldSign, and SignEasy all have strong visibility scores but 0.0% citation rates, while GetAccept has a 25.0% citation rate with 0.0% visibility. Only PandaDoc achieves meaningful scores on both metrics simultaneously.
How do major brands like Adobe Acrobat Sign and Dropbox Sign perform in AI visibility?
Both Adobe Acrobat Sign and Dropbox Sign score 0.0% on visibility, citation, and composite score in this audit, placing them outside the active AI conversation for digital signature API platforms entirely.
Which engine dominates AI coverage for digital signature API platforms?
Google AI Mode is the top engine for every single brand across all 20 tracked in this category, with no brand recording a stronger signal on any alternative engine.