Image Format Converter
Convert between PNG, JPG, and WEBP in the browser.
Drop an image here or click to upload
Your file never leaves your browser
Using AI? Optimize your prompts first.
Better prompts = better output = fewer revisions.
Try the Prompt Optimizer — Free →You might also like
Image Resize & Compress
Resize and compress images to any size. Set dimensions, quality, and format. Free, 100% client-side.
Image to Text OCR
Extract text from images, screenshots, and scanned documents using OCR. Save 95-99% on tokens vs uploading images to AI. Free, 100% client-side.
HTML to Markdown Converter
Convert HTML to clean markdown. Remove tags, keep formatting, save 20-50% on tokens. Free, runs in your browser.
AI Prompt Optimizer
Paste any AI prompt and get an optimized version using the ICCSSE framework. Works for ChatGPT, Claude, and Gemini. Free, no signup, runs in your browser.
100% client-side where applicable — your files and inputs stay in your browser. Nothing is uploaded to HundredTabs servers for these tools.