ToolMintX added five tools, and they follow the rule the rest of the site is built on: the work happens on your device, not on a server. You upload nothing. Whether you're pulling text out of a screenshot, watermarking product photos, printing a barcode, working out GST or sending a client an invoice, the data stays in your browser tab from start to finish.
Most free online tools for these jobs ask you to upload the exact thing you're trying to protect, like an unreleased product photo, a client's billing address or a scanned ID. These five don't.
The five tools
| Tool | Category | Use it for | What you get |
|---|---|---|---|
| Image to Text (OCR) | Image | Extracting text from photos, screenshots, scans | Editable, copyable text in 10 languages |
| Bulk Watermark | Image | Protecting many images at once | Watermarked images, downloaded as a ZIP |
| Barcode Generator | Creator | Product, inventory, and shipping codes | Scannable PNG or scalable SVG barcodes |
| GST Calculator | Finance | Adding or removing GST in India | Net, tax, gross, and CGST/SGST or IGST split |
| Invoice Generator | Finance | Billing clients | A clean, professional invoice PDF |
Image to Text
The Image to Text tool converts the words inside an image into text you can edit and copy. Give it a screenshot, a photo of a document, a slide or a scanned page, pick the language, and it returns the text.
It runs the Tesseract OCR engine compiled to WebAssembly, entirely inside your browser, so your image is never uploaded. The only thing it fetches is a small language data file the first time you use a given language. The browser caches that file, which makes repeat use faster and lets it work offline.
It supports ten languages: English, Hindi, Spanish, French, German, Portuguese, Arabic, Chinese, Japanese and Russian. Accuracy improves if you use the sharpest, highest-resolution version of the image you have, straighten skewed scans, crop out clutter and set the language to match the image. Printed text reads far better than handwriting. That's a limit of OCR in general, not of this tool.
Bulk Watermark
Watermarking one image is easy in any editor. Watermarking two hundred is the real problem, and the Bulk Watermark tool handles it: drop in as many images as you like, set the watermark once, and apply it to the whole batch.
The watermark can be text, with control over font size, color, opacity and rotation, or a logo you upload (a transparent PNG works best) and scale to fit. Position presets cover the four corners and the center. A tiled mode repeats the mark across the whole frame, which is the hardest pattern to crop out.
A live preview renders on the first image so you can tune the look before committing. You then download a single image, or every image bundled into one ZIP. Each image is drawn on the browser canvas, so the unmarked originals never leave your machine.
Barcode Generator
The Barcode Generator pairs with the existing QR code generator, but barcodes follow much stricter rules, and that's where many online generators fall short. This one supports nine symbologies (CODE128, EAN-13, EAN-8, UPC-A, CODE39, ITF-14, MSI, Pharmacode and Codabar) and validates your input against each format's rules as you type.
Enter 11 digits where EAN-13 needs 12 or 13 and it says so immediately, instead of giving you a broken code that fails at the checkout scanner. A short hint under the input always shows what the selected format accepts.
For format choice, CODE128 is the best general-purpose option and encodes letters and numbers. EAN-13 and UPC-A are for retail products, ITF-14 is for shipping cartons, and CODE39 is common in industrial and asset-tracking systems.
You can change bar width, height and colors, toggle the printed text label, and export a high-resolution PNG (rendered at triple resolution for sharp scanning) or a scalable SVG for print and design work.
GST Calculator
India's GST has a quirk that trips people up: removing tax from a tax-inclusive price is not the same as subtracting the percentage. The GST Calculator handles both directions.
In Add GST mode you enter a pre-tax price and it adds the tax on top. In Remove GST mode you enter a total that already includes GST, and it works backwards to the base price and the tax inside it by dividing by one plus the rate. For example, ₹1,180 at 18% has a base of ₹1,000 and ₹180 of GST.
Pick a slab of 3%, 5%, 12%, 18% or 28%, or type a custom rate. Then choose the type of supply. An intra-state sale splits the tax equally into CGST and SGST (18% becomes 9% + 9%), while an inter-state sale shows a single IGST at the full rate. The breakdown shows the base amount, the tax and the gross total.
Invoice Generator
The Invoice Generator turns your billing details into a ready-to-send A4 PDF, with no signup. Add your business and client information, an optional logo, as many line items as you need, a tax percentage and a discount. Totals update live, and one click exports the PDF.
It supports multiple currencies, including INR with GST-style tax, which suits Indian freelancers and small businesses. The discount applies to the subtotal first, then tax is calculated on the discounted amount, the usual order for billing.
The whole document, logo included, is assembled in your browser with the pdf-lib library. None of your billing data is transmitted, and there's no account to create. One small catch: the standard PDF fonts don't include the ₹ glyph, so the exported file writes the rupee symbol as "Rs." so it renders on every device. The on-screen totals still show ₹.
Why client-side
Recognizing text, stamping watermarks, drawing barcodes, computing tax and laying out a PDF are all things a modern browser can do on its own, with no round trip to a server. Your screenshots, product photos, product codes, financial figures and client details stay on your machine, and each tool keeps working when your connection doesn't.
