Certificate Generator
Create professional event certificates offline or bulk compile pages to a ZIP.
Interactive Tool Workspace
Certificate A4 Canvas
Free Certificate Generator Online with Bulk CSV ZIP Mode
Generate premium, print-ready certificates offline in A4 landscape format. Choose from completion, excellence, appreciation, and sports themes. Easily upload your company logo, draw or upload signatures, and use our bulk mode to generate hundreds of certificates instantly inside a single ZIP file from a names list.
Why Local Bulk Generation Beats Cloud Tools
Cloud-based certificate makers restrict bulk generation or hide it behind expensive subscriptions. ConvertExpert loops through your bulk recipient list entirely in client-side RAM, rendering high-DPI canvases in milliseconds and compressing them using JSZip. Your data never leaves your computer.
Frequently Asked Questions (FAQs)
Simply select "Bulk CSV Mode" and paste a comma-separated or line-separated list of names. The generator will render each certificate behind the scenes, convert it to a vector PDF, and combine them into a single .zip file download.
Yes. You can upload your organization's logo and authorized signature images. They are drawn directly onto the target canvas dynamically at high resolution.
All templates are set in standard international A4 landscape ratios (1.414 aspect ratio), compiling at 300 DPI for crisp, high-definition printing on high-weight cardstock.
Yes, absolutely. Since it runs inside your own browser with zero server hosting load, you can generate an unlimited number of certificates daily for free.