8 working forms tools · runs 100% in your browser

Build, validate, and ship forms that convert.

A premium single-page toolkit for web developers and product designers. Visually compose accessible forms, test validation rules, browse a curated regex library, audit markup for accessibility, and model conversion impact — all in one file, all offline.

8Working tools
36+Regex patterns
11Field types
8Form templates

FBForm Builder

Compose a form field by field. Pick a type, configure label, placeholder, helper text, required flag, and validation rules, then live-preview the rendered form and copy accessible HTML with proper label, ARIA, and constraint attributes.

Add field
Your fields 0
Field properties
Select a field above to edit its properties — or add a new field from the palette.
Generated HTML
// Add some fields to see generated HTML
Live preview
Your form preview will appear here.

IVInput Validator

Configure a validation rule set for a single field, type a test value, and see exactly which rules pass or fail. Useful for prototyping constraint messages before wiring them into a real form.

Rules
Test value

RXRegex Pattern Library

A curated library of 36 production-flavored regex patterns for the formats developers validate most. Each card shows the pattern, a short description, and a live test input — type and watch the match state update instantly.

FGHTML Form Generator

Pick a form type and instantly get a complete, accessible HTML form with appropriate fields, labels, validation attributes, and a styled submit button. Toggle inline CSS and validation attributes on or off.

Choose a form type
Generated HTML
Live preview

AXAccessibility Checker

Paste an HTML form and the checker audits it for common accessibility issues: label associations, required indicators, ARIA usage, fieldset/legend for groups, autocomplete hints, input type choices, and button text quality.

Paste your form HTML

PWPassword Strength Checker

Type a password and watch a transparent rule-based strength score update live. The score rewards length, character-class diversity, and absence of common patterns and dictionary words, and estimates crack time against a fast offline attack.

Password input
Weak Fair Good Strong
Score
0/100
Rating
Length
0
Charset size
0
Crack-time estimate
Offline fast attack (10¹⁰ guesses/sec)
Crack time assumes an attacker has the password hash and uses fast hardware. A longer crack time is better; aim for "centuries".

Character types present

Suggestions
!Start typing a password to see analysis.

FAForm Analytics Calculator

Model the conversion impact of form length using a widely cited industry heuristic: each additional field reduces conversion by roughly 3–10%. Project abandonment volume, completion speed, and revenue impact of removing fields.

Current form metrics
Industry research (HubSpot, Formstack, Unbounce) places this drop between 3% and 10% per field. Default is a 4% midpoint.
Results
Abandonment / 1000 visits
0
Completions / 1000 visits
0
Fields per second
0
Sec per field
0

If you remove 3 fields
Projected conversion
0%
Conversion lift
0%
Extra conversions / 1000
0
Revenue impact / 1000
$0

Interpretation

MSMulti-Step Form Planner

Plan a multi-step form: tell us how many fields and how many steps, and the planner distributes fields across steps, draws a visual mockup with progress and per-step completion estimates, suggests field groupings, and exports a structured outline.

Plan parameters
Per-step drop-off is the share of users who start a step but leave before finishing it. Industry reports typically range 5–15% per step.
Plan summary
Total fields
0
Total steps
0
Avg fields / step
0
End-to-end completion
0%

Step distribution

Export outline

Frequently asked questions

Everything you need to know about how each tool in the Premium Forms Toolkit works under the hood, how reliable the outputs are, and what you can do with them.

The Password Strength Checker scores passwords on a 0–100 scale using a transparent rule-based algorithm. Points are awarded for length (up to 40), the presence of lowercase letters, uppercase letters, digits, and symbols, and bonus points for length over 12 characters. Points are deducted for all-lowercase passwords, common keyboard patterns like qwerty and 123456, dictionary words like password and welcome, and repeating character sequences. The crack-time estimate multiplies the character set size raised to the password length and divides by an assumed 10¹⁰ guesses per second, representing a fast offline attack against a stolen hash.
The patterns in the Regex Pattern Library are well-tested expressions drawn from common community conventions for each format. They handle the vast majority of valid inputs and reject obvious invalid ones, making them excellent for client-side validation and prototyping. For server-side validation or critical flows like payment processing, always combine regex with additional checks such as Luhn for credit cards, checksum for IBAN, and a real verification email for email addresses, because no single regex can fully model every edge case of formats like IPv6 or international phone numbers.
The Form Analytics Calculator uses industry-published heuristics rather than your specific data. The convention that each additional field reduces conversion by roughly 3 to 10 percent is widely cited from studies by HubSpot, Formstack, and Unbounce, and we use a 4% midpoint by default. The projected conversion and revenue impact numbers are directional estimates meant to inform design decisions, not guarantees. For accurate results on your own forms, instrument them with analytics and A/B test field reduction directly.
Yes. All HTML, CSS, and accessibility markup generated by this toolkit is produced locally in your browser and belongs to you with no licensing restrictions. You can paste it into commercial websites, client projects, products, templates, and paid courses without attribution. We recommend reviewing the generated code for compliance with your specific legal requirements, such as GDPR consent language or regional accessibility regulations, before deploying to production.
No. The Accessibility Checker performs static analysis on the HTML you paste, looking for common, well-documented issues such as missing label associations, missing required indicators, absent fieldset and legend for grouped fields, missing autocomplete attributes, and non-descriptive button text. Passing the checker does not guarantee full WCAG compliance, which also requires keyboard testing, screen reader testing, color contrast analysis, and consideration of cognitive load. Treat the checker as a first-pass automated lint, not a certification.
No. Every tool in the Premium Forms Toolkit runs entirely in your browser using client-side JavaScript. The text you type into the password field, the HTML you paste into the accessibility checker, and the form configurations you build never leave your device. There are no analytics on input content, no backend calls, and no account required. You can safely paste sensitive drafts, real passwords you are auditing, or unpublished client code.