RecordHTML is a browser based tool for converting HTML5 ads and other web creatives into MP4, WebM, or GIF files. It opens a creative in a real Chrome browser and records it at a specified pixel size, frame rate, and duration. Users can provide a creative’s URL or upload a ZIP file, after which the tool measures the ad and fills in its dimensions. The workflow involves choosing an output format and settings, recording the creative in real time, previewing the result, and downloading the file. Available options include size presets from 300×250 to 4416×1656, frame rates including 23.976, 29.97, and 59.94 fps, and exact frame counts. The tool also supports constant bitrate H.264 encoding for digital out of home displays, audio in MP4 and WebM files, and optional cropping or trimming. RecordHTML is intended for preparing HTML5 advertising creatives for delivery as video, including display banners, vertical creatives, and large format screens. The website offers 10 free credits per month without requiring a payment card.