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HTML form generator
Build a contact form visually, copy production-ready HTML. Pick fields, set required, customize styling — get clean working code.
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free dev tools
Free tools for form builders.
Tools we built because we needed them ourselves. No login. No limits. Open in your browser, get the result, ship.
✅
HTML form validator
Paste any form markup, get correctness, accessibility, spam, and best-practice checks with a 0–100 score and a fixed version to copy.
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HTML form to JSON converter
Paste form markup and generate a JSON schema, sample payload, detected fields, and splitforms-ready HTML.
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🎯
Form action URL tester
Paste a form action URL, get reachability, status, CORS headers, POST acceptance, and detected backend (splitforms, Formspree, mailto:, localhost).
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Honeypot field generator
Generate a hidden anti-spam input with a chosen name, hiding technique, aria flags, and a visible test-mode snippet for verification.
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Webhook tester
Paste JSON, form-encoded, or query-string webhook payloads and inspect the parsed structure locally in your browser.
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Form spam scorer
Paste form text and get a 0-100 spam score with a per-rule breakdown. Runs entirely in your browser.
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🖼
Image to Base64 converter
Convert PNG, JPG, WebP, GIF, SVG, or AVIF images to Base64 data URLs locally in your browser. Copy HTML and CSS snippets.
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Base64 to image converter
Paste a Base64 data URI or raw Base64 to preview and download the decoded PNG, JPG, WebP, GIF, or SVG image. Detects format automatically.
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🔗
URL to Base64 converter
Enter a direct image URL, fetch it in your browser, and get its Base64 data URL. Clear CORS error messaging when a host blocks cross-origin reads.
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Base64 decode & encode
Decode Base64 to readable UTF-8 text or encode text to Base64. Toggle directions, live character counts, instant copy. Runs locally in your browser.
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✉️
Mailto link generator
Build a mailto: URL with multiple recipients, CC, BCC, subject, and pre-filled body. Copy the URL or the full HTML <a> snippet.
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🛡
Email obfuscator
Encode your email so spam scrapers can't read it but humans can still click. HTML entity, reversed-string, or split-concat methods.
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Need a real form backend? splitforms is free.
500 form submissions per month, no credit card. Drop one POST endpoint into any HTML form and submissions land in your dashboard. Free includes inbox delivery.