Resize, crop, and compress images to custom KB limits (20KB, 50KB, 100KB) for official exam portals, job forms, and websites. All conversions execute strictly inside your browser for total privacy.
Supports JPG, PNG, WebP, GIF, PDF, Word, PowerPoint & Excel • Max 100 MB each
Adjust pixel dimensions manually or scale proportionally with percentage inputs.
Target a specific KB threshold (e.g. 20, 50, 100) or adjust the quality slider directly.
When Target Size is filled, ResizeTool runs an automated binary-search pass to fit under your limit.
Easily switch between standard web formats with zero quality loss.
Generates standard pixel-dimension presets with clean margins on a white canvas.
Combine your selected images into a single formatted multi-page PDF document.
Convert modern .docx, .xlsx, and .pptx documents to PDF securely inside the browser.
Reduce PDF document weight while keeping text and line drawings crisp.
Render each PDF page as an HD slide in a standard 16:9 widescreen PowerPoint deck.
Automatically turns Word .docx headings into slide titles and bullet points.
Calculate a matching image height from the selected photo’s proportions.
Estimate print dimensions from the selected image’s pixels and a chosen resolution.
Inspect file dimensions, format, size, and a sample of its main colors.
Preview a text mark and download a JPEG copy. The selected original stays unchanged.
Engineered from the ground up for privacy, speed, and exact compliance with upload forms.
Your photos, contracts, and documents never upload to a cloud server. All file parsing occurs securely in client-side memory.
Meet strict government portal limits (UPSC, SSC, US Visa) that reject files over 20KB, 50KB, or 100KB with our iterative optimizer.
No waiting in server queues or dealing with file upload lags. Conversions execute instantly using your local computer processor.
Explore the full practical guides for step-by-step help with file preparation.
Detailed instructions to help you meet exact job portal, passport agency, and educational application guidelines.
A file-size limit (such as 50 KB) is fundamentally different from pixel dimensions (like 600×600 px). Resizing alters the number of pixels across the image. Compression adjusts data encoding efficiency.
When applying for exams or identity verifications, always input the exact required pixel width and height first under Resize, then pass it through Compress to satisfy the file-size limit.
Unlike standard sliders that leave you guessing, ResizeTool uses an iterative binary search pass directly over the HTML5 Canvas image blob. It tests compression qualities from 95% down to 10% in fractions of a second to get as close to your specified KB target as technically possible.
JPEG: Best for realistic photographs and human faces. Produces smaller files with controllable lossy compression.
PNG: Best for signatures, typography, and logos where sharp edges and transparent backgrounds must not get blurry.
WebP: Delivers up to 30% smaller sizes than JPG at equivalent clarity. Recommended for fast-loading websites and modern apps.
Standard PDF compressors often degrade text into unreadable blurs. ResizeTool’s engine renders PDF pages at a calibrated 144+ DPI scale before adjusting JPEG quality, ensuring that small annotations and signatures stay crisp.
No. ResizeTool runs completely in client-side JavaScript. Your photos, signatures, and PDF documents are rendered inside your browser's private sandbox. Nothing is transmitted over the wire to external cloud servers.
Drag your file into the upload zone above, click on the Compress tool tab, type 20 or 50 into the Target Size (KB) box, and hit Compress & Download. If the image is still too big, use the Resize tool first to bring large 4K dimensions down to ~800×600 px.
Downsizing an image maintains high sharpness and looks crisp on displays. However, upscaling a small photo (e.g. 100px to 1000px) will introduce softness because browsers cannot synthesize detail that was never recorded in the original shot.
The core tools are available without a paid account. This website may display advertising; see our Privacy Policy for information about advertising and data use.
ResizeTool was engineered by Aditya G. Chudhari to provide students, job applicants, and professionals with a secure, zero-upload tool for preparing documents. By utilizing modern web APIs such as the HTML5 Canvas, WebAssembly, and local Blob streams, ResizeTool delivers desktop-grade utility inside your browser window.
For questions, feature requests, or technical bug reports, reach out directly to resizetool@yahoo.com.
Last Updated: October 12, 2026. See the full Privacy Policy and Terms of Use.
Zero File Retention: Selected images and documents are processed locally. ResizeTool does not operate an upload backend or database for storing your files.
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