Prefill monday.com Forms: URL Parameters That Work

Published on August 07, 2026

You already know the respondent’s email — you sent them the link. You know their department, their account, their item on the board. Yet the form opens blank, and they retype data you already have. Some make typos. Some give up.

Prefill fixes this, and monday.com users keep asking how to do it: threads on prepopulating forms from board data  and passing URL parameters into forms  come up year after year, and the community even maintains a workaround guide . This post covers the three prefill mechanisms, what WorkForms supports natively, and how to combine prefill with hidden and read-only fields.

Quick answer

• There are three prefill mechanisms: per-field default values, URL query parameters, and — on update forms — the item’s existing board data.
• WorkForms has native URL prefill, but it is plan-gated and covers only a subset of question types; check monday.com’s support article  for the current list.
• FormFlow supports all three mechanisms, plus hidden and read-only fields, on published forms — see form settings.

The Three Prefill Mechanisms

1. Default Values

The simplest form of prefill: set a “Pre-filled value” in a field’s settings, and every respondent sees it already filled in. Use defaults for values that are usually the same — a default country, a standard priority, today’s expected turnaround. Respondents can change them unless you make the field read-only.

2. URL Parameters

Append query parameters to the public form URL, and matching fields arrive filled:

https://your-form-link?email=dana@example.com&department=Support

Each personalized link carries its own values, which makes URL prefill the workhorse for campaigns and generated links: build the URL from board data with a formula or automation, send it, and the respondent starts with their details in place.

One behavior to plan around: URL parameters are visible and editable by anyone who has the link. That is what makes them easy to generate — and what makes them wrong for secrets, as covered below.

3. Item Data on Update Forms

On FormFlow update forms, prefill is structural: each item has its own link, and the form opens showing the item’s current data. Respondents see what is on file and change only what changed. URL parameters merge with the item data, so you can prefill additional fields on top of what the board already knows.

What WorkForms Supports Natively

WorkForms includes URL-parameter prefill, with two constraints to check before you build on it: it is plan-gated (Pro and up), and it supports only some question types — building links also means locating column IDs by hand. The support article  has the current type list and plan requirements; the community workaround guide  shows what users do in practice. If your prefill needs are simple and your plan qualifies, native may be enough. If you need prefill on more field types, on any plan, or merged with existing item data, that is what FormFlow’s prefill stack is for.

Hidden and Read-Only Fields

Prefill gets more useful when the respondent does not need to see or edit the value:

• Hidden fields stay out of the respondent UI while still being driven by defaults, item data, or URL prefill. Use them to carry context — source campaign, internal category, region — into the submission without cluttering the form. Behavior varies by field and form type, so test your flow before go-live.
• Read-only fields show a value without allowing edits. Use them to give respondents context (“this is the project we mean”) while protecting the data from accidental changes.

Both are documented in form settings.

Keep Secrets Out of URLs

URL prefill is public: anyone with the link can read the parameters and change them before submitting. Never pass passwords, tokens, or private data as query parameters. For sensitive flows, use the mechanisms built for them — per-item passwords on update forms, and password protection on insert forms. Treat URL prefill as a convenience layer, not an access control.

Frequently Asked Questions

Can respondents change prefilled values?

Yes, unless the field is read-only. Defaults and URL parameters fill the field, but the respondent can still edit it before submitting. Use read-only fields when the value must not change.

Can I prefill a monday.com form from board data without an app?

WorkForms URL prefill can carry values you place in the link, but building those links from board data means assembling URLs with column IDs by hand or with formulas, on a qualifying plan. Update forms do this structurally: the form opens with the item data already loaded.

Is URL prefill safe for personal data?

Treat every URL parameter as visible to whoever holds the link. Names and emails in a personally addressed link are usually acceptable; passwords and confidential values never are. For those, use per-item passwords and update forms.

Next Steps

• Default values, prefill, and hidden fields in form settings →
• 12 best practices for monday.com update forms →
• Install FormFlow and send yourself a prefilled link to see the flow.

Last reviewed: 2026-08-03. WorkForms prefill constraints verified against monday.com’s support article ; plan gating and supported types may change — check the article for the current list.