AdCheckLab
for ad ops
Compress PNG and JPEG images inside HTML5 display ad ZIP packages to meet the Google Ads 600 KB limit. Preserves original filenames, strips macOS artifacts, and runs 100% client side in memory.
Google Ads enforces a strict 600 KB total payload limit for all assets within an uploaded HTML5 ZIP package, including HTML, JavaScript, CSS, and images. Compressing raster images directly inside the ZIP solves this issue without altering your code structure.
No. The compressor preserves exact relative file paths, filenames, and image formats inside the ZIP archive. References declared in Adobe Animate, Google Web Designer, or custom JavaScript manifests continue working seamlessly.
Never. Every file operation runs locally in browser memory via HTML5 Canvas and JSZip APIs. Unreleased client ad creatives never leave your computer, preserving client confidentiality and strict agency non disclosure agreements.