Sharing & Publishing
Response limits
Each share link can have its own response cap. Once the limit is reached, new visitors see a closed message — other links stay open.
How it works
Response limits are set per share link, not per form. This gives you fine-grained control over each distribution channel.
Open Share, pick a link, expand Limits, and toggle Limit response slots. Enter the maximum number of slots — at least 1. Once every slot is claimed, the link stops accepting new responses.
What a slot is
A slot is claimed when a respondent starts the form, not when they submit. That is what stops 200 people opening a 30-seat registration at once and 170 of them losing their answers at the end.
An unfinished slot is not lost forever. A claim lasts one hour, and a cleanup job running every 15 minutes hands abandoned slots back to the pool, so a visitor who opens the form and walks away frees their seat within roughly an hour and a quarter. Submitted responses hold their slot permanently.
When to use
- Limited-spot events — cap a workshop registration link at 30 seats
- A/B testing — give each link variant 100 responses, then compare
- Staggered rollout — set a low cap on the first link, increase as you scale
Multiple links, different caps
Since limits are per-link, you can create multiple links for the same form with different caps. For example, you could give your newsletter link a cap of 50 and your social media link a cap of 200.
What respondents see
When a link hits its cap, new visitors see a “Response limit reached” message. Existing respondents who already started filling out the form can still complete and submit.
No form-level cap
Response limits live on share links. If you want the entire form to stop accepting responses at a certain count, set the same limit on every active link — or use scheduled close combined with a link cap.
Limits per respondent
Share-link caps limit the total. To limit how many times one person can respond, use the per-respondent settings under
Form settings → Submissions:
- Allow another response — off by default, so each respondent submits once. Turn it on to show a “Submit again” button after submitting. It can’t be combined with a redirect URL.
- Maximum responses per respondent — with “Allow another response” on, cap how many times the same person can submit. Leave it empty for unlimited.
The cap is strictly enforced for signed-in respondents. For anonymous respondents it’s best-effort — formbase remembers them in their browser, so someone determined enough can get around it by switching devices. If the count really matters, require sign-in with the
There’s also a separate cap on how many times a respondent may edit a submission they already sent — Maximum edits, 1 to 3. See