About Us
Learn about SellerSlip, our mission to empower Indian e-commerce merchants with free client-side fulfillment tools, and get in touch.
About SellerSlip: Fulfillment Infrastructure for Indian Sellers
SellerSlip was founded to resolve practical, repetitive operational bottlenecks faced by e-commerce merchants and D2C brands in India. When businesses process orders across marketplaces like Meesho, Flipkart, and Amazon, seller panels generate shipping manifests bundled with customer tax invoices on standard A4 paper dimensions. For sellers dispatching tens or hundreds of parcels daily, printing full A4 sheets on laser printers consumes excessive paper and ink, while cutting labels with scissors wastes hours of manual labor.
Our mission is to provide free, high-performance web utilities that streamline warehouse fulfillment. From cropping shipping labels to 4×6 inch and 4×2 inch thermal rolls to batch merging PDFs, calculating true net payouts, and generating barcode sheets, our tools help merchants fulfill orders faster and eliminate operational friction.
Core Engineering Principles
1. 100% Client-Side Privacy (Zero File Uploads):
Customer delivery addresses, phone numbers, and business sales invoices are sensitive operational assets. All PDF parsing, coordinate cropping, and image conversions run directly inside your browser using WebAssembly. Files never upload to an external server.
2. Lossless Vector Coordinate Manipulation:
Unlike tools that convert PDFs into low-resolution raster images, our engine manipulates native PDF vector paths and font streams directly. Code 128 and EAN 13 barcodes remain mathematical vectors, ensuring maximum scan readability at 203 DPI and 300 DPI.
3. Free & Unrestricted Access:
We believe essential operational tools should be accessible to all merchants without subscription walls, artificial daily quotas, or forced watermarks.
Supported Logistics Partners & Thermal Hardware
Our cropping geometry and sorting algorithms are verified across major Indian e-commerce logistics networks and commercial thermal printer hardware:
- Logistics Carriers: Valmo, Delhivery, Shadowfax, Ekart Logistics, Xpressbees, Blue Dart, DTDC, India Post Speed Post, and Shiprocket.
- Thermal Printers: TVS LP 46 Neo / LP 45, TSC TE244 / DA210 / TTP-244 Pro, Xprinter XP-420B / XP-470B, Zebra ZD220 / ZD230, and Everycom.
Commitment to Seller Data Sovereignty & Privacy
In an era where online utility portals frequently monetize user data through hidden document scraping or third-party cloud analytics, SellerSlip is engineered on strict zero-retention principles. E-commerce shipping manifests contain sensitive proprietary information: customer names, contact phone numbers, delivery coordinates, seller GSTINs, and order SKU volumes. Transmitting these documents to external cloud storage introduces severe data leakage risks.
By compiling our parsing routines to client-side WebAssembly, our application guarantees that no file contents ever leave your physical workstation. Sellers retain complete sovereignty over their customer databases and commercial records.
Global Edge Infrastructure & Warehouse Reliability
Marketplace sellers operate against strict daily dispatch cutoffs (Ready to Dispatch SLA). Server downtime during peak afternoon packing hours directly causes seller tier penalties. Our web application assets are distributed across Cloudflare's global edge network spanning over 300 cities worldwide, delivering sub-50ms initial load times across Indian commercial centers including Surat, Tiruppur, Jaipur, Delhi NCR, Mumbai, and Bengaluru.
Frequently Asked Questions
Is SellerSlip affiliated with Meesho, Flipkart, or Amazon?
No. SellerSlip is an independent web utility built to support sellers. We are not affiliated with, endorsed by, or sponsored by Meesho (Fashnear Technologies), Flipkart Internet Pvt Ltd, or Amazon.com Inc.
How does the platform fund its hosting and ongoing maintenance?
We sustain operational infrastructure through non-intrusive display advertising. All core PDF cropping, merging, and calculator tools remain completely free for users.
Can our warehouse use this tool offline without an active internet connection?
Yes. Once the web application is loaded in your browser tab, the WebAssembly engine runs locally. You can process, crop, and download files even if your internet connection disconnects.
How can users contact the team for feature suggestions or technical support?
You can reach our engineering and support team via email at support@sellerslip.com. We actively review seller feedback to improve format compatibility.
Do you charge transaction fees or recurring software subscriptions?
No. All utilities are 100% free with no monthly subscription charges, credits system, or locked premium features.
How do you keep cropping coordinates synchronized with marketplace changes?
Our team regularly analyzes updated PDF manifest exports from major marketplaces, updating coordinate boundary offsets to maintain seamless compatibility.
Can multiple packaging operators use the site simultaneously in one warehouse?
Yes. Because each session runs in local browser memory without server-side processing queues, dozens of packing workstations can operate in parallel without speed degradation.
Which web browsers provide optimal performance for PDF processing?
Modern Chromium-based browsers (Google Chrome, Microsoft Edge, Brave) and Mozilla Firefox provide the fastest WebAssembly execution for large batch files.
Client-Side Security Guarantee: All document processing, vector coordinate cropping, and label generation occur 100% inside your local web browser memory via WebAssembly. No files, customer addresses, phone numbers, or invoices are uploaded to external servers.