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Ten functional experiments

Tool Lab contains ten focused browser utilities with actual input processing, a result preview or report, and downloadable output. Each operation area states supported formats, size limits and rejected cases. Synthetic examples are labelled.

These experiments do not claim proven demand, superiority to existing software, guaranteed search visibility or advertising approval. Original discussions explain task context and are not endorsements.

The interface uses Astro; processing uses self-hosted pdf-lib, ExcelJS, fflate, fast-xml-parser and fast-png where needed. No remote CDN, paid processing API or visitor-triggered language model is used. Browser memory and fonts can affect results. Inspect outputs and test physical print jobs.

Bundled software license notices · Privacy details · Historical references

十个可操作的实验工具

十项工具均有真实处理、预览或报告和下载功能。格式、大小上限和拒绝条件写在操作区，合成示例均有标记。

工具仍属实验，不代表需求、优于现有软件、搜索收录或广告资格已经验证。来源讨论并非推荐背书。图片可能受字体与内存影响；下载后请核对，印刷前先测试一张实物。

程序与依赖自行托管，不使用远程 CDN、付费文件接口或访客逐次调用的大模型。