Fix Your File Size Instantly & Securely
Resize and compress your documents, photos, and PDF files. Whether you need a quick pdf resize in kb or want to resize pdf in kb to target sizes like 20KB, 50KB, 100KB, 200KB, or 500KB, our local tool lets you resize PDF to exact KB limits. Processed 100% in your browser—your files never leave your device.
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100% SecureNo server uploads ever
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PrivateFiles stay on your device
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InstantResults in seconds
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Browser BasedWorks on any device
Resize & Compress Images
Pick a target size and compress JPG, PNG, or JPEG photos in your browser.
Image Resize in KB — Custom Target
Resize any image to exact KB limits (20KB, 50KB, 100KB, 200KB or custom size) free online.
Resize Image to Exact KB →Reduce Image Size in KB
Reduce photo file sizes to any KB limit without quality loss for UPSC, SSC, and bank forms.
Reduce KB Size →KB File Converter
Convert and resize any image or PDF document to exact KB size instantly in browser.
Convert File to KB →Resize Image to 10KB
Compress your image size down to 10KB or less online in seconds. Perfect for strict document uploads.
Compress Now →Resize Image to 20KB
Instantly reduce JPG, JPEG, or PNG sizes to 20KB or less with optimized canvas compression.
Compress Now →Resize Image to 30KB
Shrink file sizes to exactly 30KB while keeping high visual quality for government portals.
Compress Now →Resize Image to 50KB
Quickly optimize and scale your images under 50KB. Perfect for online applications.
Compress Now →Resize Image to 100KB
Reduce photo sizes to 100KB or less for resume uploads and general job submissions.
Compress Now →Resize Image to 200KB
Adjust image file sizes to under 200KB to match portal standards without loss of detail.
Compress Now →Resize Image to 500KB
Compress large high-resolution photos down to 500KB to save device storage or web page loads.
Compress Now →Aadhaar, Passport & Messenger Tools
Specialized tools for ID photos, passport sizing, and messaging apps.
Photo Resize for Aadhaar
Crop and resize passport photos to 3.5cm x 4.5cm and under 50KB for Aadhaar registration.
Compress Now →Passport Size Photo Maker
Convert and crop photos into standard 2x2 inch or 3.5x4.5cm passport sizes under 50KB.
Compress Now →Compress Image for WhatsApp
Shrink image dimensions and file sizes specifically for fast loading on WhatsApp chats.
Compress Now →Compress & Convert PDF Files
Reduce PDFs to portal limits or prepare them for sharing—all locally in your browser.
PDF Resize in KB — Target Any Size Instantly
Need to resize a PDF to an exact KB limit? ResizeKB lets you compress any PDF to 100KB, 200KB, 500KB or 1MB directly in your browser. No upload. No account. Just select your target KB and download.
Resize PDF to Exact KB →Compress PDF to 100KB
Shrink PDF file sizes under 100KB for strict online web portals and email submissions. Easily resize PDF to exact KB limits.
Compress Now →Compress PDF to 200KB
Compress digital or scanned PDFs to 200KB or less without uploading data to remote servers. Quickly resize PDF to exact KB limits.
Compress Now →Compress PDF to 500KB
Downsize PDF files containing rich text or scans under 500KB using smart browser encoding. Seamlessly resize PDF to exact KB limits.
Compress Now →Compress PDF to 1MB
Reduce PDF file size to 1MB or less. Keep report documents clear and readable, and resize PDF to exact KB targets.
Compress Now →Compress PDF for WhatsApp
Decrease PDF sizes for easy sharing via WhatsApp document message protocols, or resize PDF to exact KB targets.
Compress Now →Aadhaar PDF Compress
Safe and local compression for Aadhaar card PDFs. Unlock, compress, and resize PDF to exact KB values.
Compress Now →Convert & Combine Files
Merge, convert, and extract pages without uploading to a server.
Merge Aadhaar Front & Back
Merge separate front and back images of your Aadhaar card into a single page JPEG or PDF document.
Compress Now →JPG to PDF Converter
Convert and compile multiple JPG/JPEG images into a single professional PDF file.
Compress Now →Image to PDF Converter
Merge different image types (PNG, JPG, WebP) into a single PDF document in the browser.
Compress Now →PDF to JPG Converter
Extract all pages of your PDF document as separate JPEG files, download in a ZIP file.
Compress Now →Daily Use Tools
Compress and resize files for daily needs like WhatsApp, professional profiles, KYC documents, and email attachments.
Resize Image for WhatsApp
Compress your photo under 1MB for profile, status, or chat, maintaining perfect aspect ratio.
Resize Now →LinkedIn Profile Photo Resizer
Crop and resize your photo to 400x400px square under 2MB for professional networking profiles.
Crop Now →Bank KYC Document Compressor
Securely compress Aadhaar, PAN card, and bank statement PDFs or images below 500KB locally.
Compress Now →Resume Photo Resizer
Crop and resize photo to 3.5x4.5cm passport dimensions under 50KB for CV and resume uploads.
Crop Now →Compress PDF for Email
Compress PDF documents below 10MB to fit standard email limits for Gmail, Outlook, and Yahoo.
Compress Now →Guides & Resources
Read exact upload specifications, dimensional guidelines, and file size limits for major government, exam, and job portals in India.
UPSC Photo Size Requirements
Official UPSC photo and signature sizes, KB limits, backgrounds, and step-by-step resizing instructions.
Read Guide →SSC CGL Photo Upload Guide
Understand the strict 20KB-50KB limits, white backgrounds, and how to crop photos and signatures for SSC CGL registration.
Read Guide →Passport Photo Size India
Official 51x51mm (2x2 inch) square photo specs, facial visibility rules, and glasses guidelines.
Read Guide →How to Compress PDF for WhatsApp
Learn how to compress PDF files to under 2MB or 1MB for fast transfer over WhatsApp on mobile networks.
Read Guide →Aadhaar PDF Compress Safely
How to shrink password-protected e-Aadhaar PDFs below 200KB or 500KB locally in your browser without data uploads.
Read Guide →Best Photo Size for Government Forms
Complete size chart, dimensions, and resolution guidelines for major Indian government exam and recruitment portals.
Read Guide →100% Client-Side
Processing runs entirely in your browser.
0 Files Stored
Nothing is uploaded to our servers.
Instant Compression
Get results in seconds on any device.
Free Forever
No signup, subscription, or paywall.
Why Choose ResizeKB?
Most online converters require uploading your sensitive documents—like passports, national identification cards, and resumes—to remote servers. This poses severe data privacy and security risks. ResizeKB performs 100% browser-side processing. Your documents are parsed, resized, and encoded locally on your computer or mobile phone. Your data never leaves your device.
Frequently Asked Questions
Yes. ResizeKB runs entirely client-side. We use your browser's processing engine (Canvas API and JavaScript memory) to resize images and PDFs. Because there is no server upload, your sensitive personal documents (like Aadhaar cards, passport photos, and certificates) remain entirely private on your device.
ResizeKB loads lightweight open-source engines (PDF.js and PDF-Lib) directly in your browser. When you select a PDF, the browser renders its pages onto an invisible canvas, compresses the canvas drawing into an optimized JPEG structure, and packs those JPEGs back into a brand new PDF file, all within local memory.
Many government, job application, and admissions portals require files to be under specific file sizes (e.g., photos under 50KB or PDFs under 200KB). We automate the trail-and-error process by running a binary search on the quality parameters until the file meets the exact limit.
Absolutely. ResizeKB is designed mobile-first. It is extremely fast, lightweight, and works on Safari (iOS), Chrome (Android & iOS), and standard mobile browsers without needing any app installations.