ToolHubThe ToolHub Blog
Guides from a solo developer who builds browser tools that run on your device. You will learn image compression, resizing for forms, PDF to Markdown, and more, written by the same person who built the tools.
Convert PDF to Markdown: Why It Matters and How to Do It
Turn any PDF into a clean .md file where headings, tables, lists, and links all survive. The conversion runs on your device.
How to Convert JPG to PDF Free Without Uploading
Convert JPG to PDF free without uploading. The browser reads your image and writes a PDF on your device, so your photos never leave your computer.
How to Merge PDF Files Without Uploading Them
Merge PDF files for free without uploading them to any server. The browser does the work on your device, so contracts, scans, and ID documents never leave your computer.
How to Compress an Image Without Losing Quality: 7 Rules That Work
Resize first, stay at 75 to 85 percent quality, pick the right format. You will learn the 7 rules that shrink most photos by 70 to 90 percent while keeping them sharp.
How to Resize an Image to an Exact KB Size for Online Forms
Hit 20, 50 or 100 KB exactly, without the picture turning to mush. You will follow the step by step method that worked for my visa photo after 4 rejections.
Coming soon
More guides on browser based tools, image formats, and private workflows. Topics I am working on next include: