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Drop your file — we'll find the right tool for it

Images, PDFs, and HEIC photos supported

Your files never leave your browser.

330+ tools for compressing images, building resumes, generating invoices, and more — all running locally in your browser. Built by a solo developer in India who got tired of tools that upload your files.

Runs in your browser No sign-up Free

Most Used Tools

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Image Compressor Compress photos to exact KB limits Most Used
HEIC to JPG Convert iPhone photos to JPG Popular
JPG to PDF Convert images to PDF documents Most Used
Resume Builder Build professional resumes Popular
Invoice Generator Create professional invoices Popular
EMI Calculator Calculate monthly loan EMI Most Used

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Image Tools10+ tools→ PDF Tools15+ tools→ Calculators50+ tools→ Developer35+ tools→ Text Tools30+ tools→ Business15+ tools→ Education20+ tools→ Health15+ tools→

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How OptiDrop Works

Every tool runs 100% in your browser. No server uploads, no data collection, no waiting.

Pick a Tool

Choose from 330+ powerful tools: compress, convert, resize, stamp, merge, extract, scan, OCR, QR codes, and more.

Drop Your File

Drag and drop or tap to browse. Supports JPG, PNG, WebP, HEIC, PDF, and BMP files.

Set Your Options

Choose target size, dimensions, DPI, format, quality, or text to stamp. One-click presets available.

Download Instantly

Get your processed file in seconds. Download individual files or everything as a ZIP.

No files uploaded
Everything stays on your device
No sign-up
Open a tool and start using it
Free, no catch
No watermarks, no hidden paywalls

About OptiDrop

OptiDrop is a free online toolkit with 330+ browser-based tools for images, PDFs, documents, resumes, invoices, calculators, developers, health, fitness, education, and more. Every tool runs entirely in your browser — no file uploads, no sign-ups, no software installations, and no hidden fees. Your files and data never leave your device, making OptiDrop the most private way to process files online.

Whether you need to compress images for WhatsApp, convert HEIC photos from your iPhone to JPG, merge PDFs for email, build an ATS-friendly resume, generate professional invoices, calculate EMI or SIP returns, or resize passport photos to exact dimensions — OptiDrop has a dedicated tool for the job. All tools are optimized for mobile phones, tablets, laptops, and desktop computers, and they work in every modern browser including Chrome, Firefox, Safari, and Edge.

OptiDrop was built to solve a common problem: most online tools require you to upload your files to a remote server, which raises serious privacy concerns — especially for sensitive documents like payslips, tax returns, medical records, and legal contracts. OptiDrop eliminates this risk by processing everything locally in your browser using HTML5 Canvas, Web Workers, PDF.js, and the Web Crypto API. This client-side architecture also means tools work faster since there is no upload/download delay.

The platform is used by students, professionals, freelancers, small business owners, photographers, designers, developers, and everyday users around the world. Popular tools include Image Compressor (compress photos to exact KB limits), HEIC to JPG Converter (convert iPhone photos without losing quality), JPG to PDF (create PDF documents from images), Resume Builder (create ATS-friendly resumes with professional templates), Invoice Generator (create GST-compliant invoices), EMI Calculator (calculate monthly loan payments), and QR Code Generator (create custom QR codes instantly).

OptiDrop is completely free to use with no premium tiers, no watermarks, no file size limits, and no daily usage caps. The platform is supported by non-intrusive advertisements and is committed to maintaining a clean, fast, and distraction-free user experience. New tools are added regularly based on user feedback and trending needs.

Frequently Asked Questions

Yes, OptiDrop is 100% free to use. There are no hidden fees, no premium tiers, no sign-up requirements, and no watermarks on your processed files. Every single tool on the platform — including Image Compressor, PDF Merger, Resume Builder, Invoice Generator, and all 300+ others — is completely free with full functionality. You can use the tools as many times as you want without any daily limits or usage caps. The platform is supported by non-intrusive advertisements to keep it free for everyone.
No, your files are never uploaded to any server. OptiDrop uses HTML5 Canvas, PDF.js, Web Workers, and the Web Crypto API to process files directly inside your web browser. This means your images, PDFs, documents, and personal data never leave your device. This client-side architecture makes OptiDrop safe for sensitive documents like tax returns, payslips, medical records, legal contracts, and passport photos. It also means processing is faster since there is no upload or download delay.
Yes, OptiDrop is fully responsive and works perfectly on Android phones, iPhones, tablets, iPads, laptops, and desktop computers. All tools are optimized for touch screens with large tap targets, mobile-friendly layouts, and gesture support. You can compress images, convert HEIC photos, build resumes, generate invoices, and use all other tools directly in your mobile browser — Chrome, Safari, Firefox, Samsung Internet, and Edge are all supported. No app installation is required.
OptiDrop provides one-click presets for passport and visa photo sizes used in over 10 countries. Supported sizes include India (413x531 px), US Visa (600x600 px), UK Passport (413x531 px), Schengen Visa (413x531 px), Canada Passport (591x827 px), Australia Passport (413x531 px), UAE Visa (472x708 px), China Visa (390x567 px), Japan Passport (413x531 px), and South Korea Passport (413x531 px). The tool automatically resizes, crops, and adjusts your photo to meet each country's exact specifications, including background color requirements and head positioning guidelines.
Yes, the Image Compressor tool is perfect for compressing images for WhatsApp, email attachments, and social media uploads. You can set an exact target file size — such as 100KB for WhatsApp profile pictures, 200KB for WhatsApp status, or 25MB for email attachments — and the tool will compress your image to fit that limit while maintaining the best possible visual quality. It supports JPG, PNG, WebP, and HEIC input formats and can output in any of these formats.
Open the HEIC to JPG Converter on OptiDrop, drag and drop your iPhone HEIC photos into the upload area (or tap to browse), and click the Convert button. The conversion happens entirely in your browser using WebAssembly — no app installation, no file uploads, and no waiting. You can batch-convert up to 20 HEIC files at once and download them individually or as a ZIP archive. The output JPG files retain the original resolution and quality while being universally compatible with Windows, Android, social media platforms, and printing services.
Yes, you can use all OptiDrop tools for commercial purposes. Freelancers, small businesses, agencies, and enterprises regularly use the Invoice Generator, Quotation Generator, Receipt Generator, and other business document tools for their professional work. There are no licensing restrictions on the output files you create with OptiDrop tools. The generated documents, compressed images, converted files, and all other outputs are yours to use however you wish.