Most people use a tool once for the exact task they came for and never explore further. That's reasonable — but several of our tools have a second feature tucked inside that solves a genuinely different problem, and it's easy to miss if you're only looking for the obvious button. Here are six worth knowing about.
1Make a Real UPI Payment QR Code
Most people assume the QR Code Generator's URL field is only for website links. It can also generate a working UPI payment QR — but only if you enter the correct deep-link format, not just your bare UPI ID. Type this into the URL field:
upi://pay?pa=yourupi@bank&pn=YourName&am=100&cu=INR
Replace the values with your own UPI ID, name, and amount. A bare UPI ID typed in without the upi://pay? prefix will generate a QR code, but scanning it won't trigger a payment screen in GPay, PhonePe, or similar apps — it'll just display as plain text.
2Generate a Wi-Fi Auto-Connect QR Code
The same tool's Text tab can create a QR code that prompts a phone to join your Wi-Fi network automatically — handy for guests, cafes, or offices. Use this exact format:
WIFI:T:WPA;S:YourNetworkName;P:YourPassword;;
The semicolons matter — leaving them out means the phone will just display the text instead of offering to connect.
3Find Your Required Future GPA
The CGPA Calculator's sidebar has a Goal Planner most people scroll past. Enter a target CGPA and your remaining credits, and it calculates exactly what GPA you need to average across those remaining credits to hit your goal — useful for figuring out, with real numbers, whether a target is realistic before the semester starts.
4Split a PDF Into Several Separate Files at Once
The PDF Splitter's custom range field does more than extract a single chunk of pages. Entering a comma-separated range like 1-3, 5, 7-9 produces three separate output files — one for pages 1-3, one for page 5, and one for pages 7-9 — rather than a single file containing all of them combined. Each comma-separated part becomes its own file, which is useful when you need to pull out several distinct sections from one large document in a single pass.
5Extract the Original Price From a GST-Inclusive Total
If you only know a final price that already includes GST and need to back out the original amount, the Percentage Calculator and GST Calculator's inclusive mode both handle this — using the correct formula, Original = (Total × 100) ÷ (100 + Rate), rather than the common (and incorrect) shortcut of just subtracting the percentage directly from the total.
6See Exactly How Much an Image Compression Saved
The Image Compressor shows a live readout of original size, compressed size, and percentage saved right after processing — rather than leaving you to guess whether a quality setting actually made a meaningful difference. Use it to quickly compare a couple of quality levels before settling on one, since the size reduction from the same setting varies by image.
A Bonus: Making a Location QR Code
One more worth mentioning alongside the UPI and Wi-Fi tricks: the QR Code Generator's Text tab can also create a QR that opens directly to a map location, using the geo: format:
geo:28.6139,77.2090
Replace the numbers with your own latitude and longitude. Typing plain coordinates as regular text will just display as text when scanned — the geo: prefix is what tells a phone's camera app to offer opening it in a maps app.
Why Deep-Link Formats Aren't More Obvious in the Interface
You might wonder why a tool wouldn't just have separate "UPI QR" or "Wi-Fi QR" buttons instead of requiring you to type a specific format into a generic field. The honest answer is flexibility — a single text-based input can generate any QR payload without needing a dedicated UI for every possible standard, at the cost of needing to know the right syntax. Bookmark this article (or the tool's own content section, which documents the same formats) if you need these again later.
Why These Are Easy to Miss
None of these features are hidden in a technical sense — they're all visible in the interface. They're easy to miss because the obvious, headline use of each tool (scan a QR code, calculate a CGPA, split a PDF, calculate GST, compress an image) doesn't hint at the second use case sitting right next to it. Worth a second look next time you're using one of these tools for the "main" task.
A Few More Worth a Quick Mention
- Admit Card Manager's download button exports each entry as a .txt backup — since the data is stored only in your browser, this is your only way to recover it if you clear your cache, so it's worth doing regularly rather than assuming the data is always there.
- Image Crop's zoom slider lets you fine-tune framing beyond what dragging the crop box alone allows, useful for precise cropping of a small detail within a larger photo.
- The GST Calculator's history panel automatically saves your last 10 calculations locally, so you can refer back to a recent calculation without redoing it, and copy any entry's details to your clipboard with one click.
Frequently Asked Questions
Can the QR Code Generator make a working UPI payment QR code?
Yes, but only with the full upi://pay deep link format in the URL field — a bare UPI ID alone won't trigger a payment screen when scanned.
Does the CGPA Calculator tell me what grades I need in future semesters?
Yes, the Goal Planner calculates the GPA needed across your remaining credits to reach a target CGPA.
Can I split a PDF into several separate files in one step?
Yes, a comma-separated range like 1-3, 5, 7-9 produces one separate file per comma-separated part.
None of these six features require anything extra to unlock — they're sitting inside tools you may already use regularly. The next time one of your usual tasks feels like it needs a second, different tool, it's worth checking whether the one you're already on can handle it with a slightly different input.