Stories, guides
and updates
Tips, comparisons, and deep-dives from the team building stax.tools.
How to Make WhatsApp Stickers From Photos, GIFs and Clips
Make WhatsApp stickers as 512x512 WebP files under 100 KB (still) or 500 KB (animated), with a tray icon and ZIP. Steps, limits and fixes.
Lossless Video Trimming: Fast Cut vs Precise Cut
Lossless video trimming copies your footage without re-encoding, but cuts snap to keyframes. See when to pick Fast or Precise mode, with real numbers.
Does an Online Tool Upload Your File? A 2-Minute Test
Does an online tool upload your file? Use the browser's Network tab and an offline test to check any video, PDF or image tool in two minutes.
Resistor Color Code Chart: How to Read 4, 5 and 6 Bands
Resistor color code chart with worked examples: read 4, 5 and 6-band resistors, find which end to start from, and decode 8.2k vs 82k correctly.
RBI Repo Rate Hike: What It Means for EMIs and Prices
The RBI repo rate hike to 5.50% lifts floating-loan EMIs first and cools prices later. See the rupee impact on EMIs, FDs and your monthly budget.
Missed the ITR Deadline? What a Belated Return Costs
Missed July 31? You can still file a belated ITR for AY2026-27 until December 31, 2026. The late fee, interest, old-regime lock-out and the exact steps to file.
Regex in 8 Steps: Patterns Every Developer Actually Uses
Learn regex patterns step by step, from literal characters to lookaheads, with 12 real-world patterns to copy into production and the mistakes that break them.
FD vs RD vs Savings Account: Which to Use in 2026
FD vs RD vs savings account in India: current bank rates, TDS rules, tax treatment, liquidity, and the right instrument for each financial goal.
From Login to Dashboard: How JWTs Work, Step by Step
How JWTs work, request by request: how the token is created, what each part holds, how servers validate it without a database call, and the security pitfalls.
Git Rebase vs Merge: 8 Questions That Settle the Debate
Git rebase vs merge: when to merge, when to rebase, when interactive rebase fits, and why 'never rebase public branches' is cited but rarely understood.
Mobile Screen Sizes in Pixels: What Developers Need to Know
Mobile screen sizes in pixels: standard phone dimensions, iPhone and Android widths, device pixel ratio and the CSS breakpoints that matter in 2026.
Compress a Video Without Uploading It (2026 Guide)
Compress video without uploading it: shrink a video by 50–80% for WhatsApp, email or the web, right in your browser. Step-by-step guide with presets.
Diff Checker Guide: How It Works and 6 Use Cases
How diff algorithms work, unified vs split diff formats, why character-level diffs matter and practical diff checker uses beyond version control.
EPF vs NPS vs PPF: Retirement Comparison for Salaried
EPF vs NPS vs PPF compared on contributions, interest rates, lock-in, withdrawals and tax at maturity, and how to combine all three for retirement.
UTF-8, Unicode and Character Encoding: A Developer Guide
Why mojibake happens, how Unicode code points map to UTF-8 bytes, how ASCII, Unicode and UTF-8 differ and why 'just use UTF-8' still needs understanding.
TDS on Rent Above ₹50,000: What Tenants Must Do
Many tenants think TDS on rent is the landlord's problem. If you pay over ₹50,000 a month, you must deduct, deposit and file, and penalties are steep.
CSS Grid in 2026: How to Actually Use Subgrid
CSS subgrid has had full cross-browser support since 2023. Learn the Grid basics, how subgrid solves alignment problems and when Grid beats Flexbox.
How Your CIBIL Score Is Calculated: The 5 Key Factors
What makes up a CIBIL TransUnion score, why it matters for home and personal loans, which habits raise it fastest and what hurts it most.
JSON vs XML vs YAML: Choosing the Right Data Format
JSON vs XML vs YAML: a scenario-first comparison of syntax, use cases, performance, readability and schema validation, and where each format wins.
NPS vs Mutual Funds for Retirement: Which Wins in 2026?
NPS vs mutual funds for retirement: returns, 80CCD tax benefits, lock-in, annuity rules and withdrawals, with a verdict by investor profile.
How to Read and Write a Cron Expression: The Complete Guide
Understand cron syntax step by step: the five fields, special characters, common patterns, timezone pitfalls and how to validate expressions before deploying.
URL Encoding Explained: Why Links Break and How to Fix Them
What percent-encoding is, which URL characters must be encoded, encodeURI vs encodeURIComponent in JavaScript and the production bugs it causes.
IP Address, Subnet Mask and CIDR Explained Simply
IP address and subnet mask CIDR notation (/24, /16) explained: what the octets mean, how to find the broadcast address and host range, and when to use a tool.
Your SIP Return Is Not CAGR: XIRR Explained
XIRR vs CAGR: investors confuse fund CAGR with personal XIRR, and for SIPs the gap can be 3–5 percentage points. The math and a worked example.
CORS Errors Explained: Why Browsers Block and How to Fix
CORS errors explained: why the Same-Origin Policy exists, what each error means, how preflight requests work and which server headers fix the problem.
ELSS vs PPF: Which 80C Option Wins in FY2026-27?
With PPF at 7.1% and rates falling, the ELSS vs PPF choice has shifted. Compare 10-year returns, lock-in and tax treatment for your ₹1.5 lakh 80C.
UUID vs ULID vs NanoID: Which ID Format in 2026?
UUID vs ULID vs NanoID compared on format, length, sortability, collision odds and database performance, with a decision guide for your next project.
How to Generate a Strong Password (and Skip Memorizing)
How to create a strong password: how entropy works, why 'P@ssw0rd' loses to 'correct-horse-battery-staple', and using a private in-browser generator.
Create a QR Code for a URL, WiFi, Contact or WhatsApp
Create a QR code for URLs, WiFi, contacts, WhatsApp links or text in your browser. No signup, no upload, no server; everything encodes locally.
Capital Gains Tax on Mutual Funds FY2025-26: Rates & ITR-2
Capital gains tax mutual funds guide: LTCG on equity funds is 12.5% and STCG 20% from July 23, 2024. How to claim the ₹1.25 lakh exemption in ITR-2.
HDFC AMC Cyber Incident: Are Your Mutual Funds Safe?
HDFC AMC disclosed a cybersecurity incident. What happened, whether your units are at risk, what data AMCs hold about you and the steps to take now.
Form 26AS vs AIS: Spot and Fix ITR Mismatches
Form 26AS vs AIS: filing ITR from 26AS alone is risky, as AIS also shows interest, dividends and MF redemptions. How to read both and fix mismatches.
2008 Mutual Fund Dividends: Recover Unclaimed Money (IEPF)
Unclaimed mutual fund dividends from 2008: agents put investors in payout plans with wrong bank details, and lakhs now sit earning 4%. A recovery guide.
Best FD Rates in India, May 2026: SBI, HDFC, ICICI Compared
The best FD rates in May 2026 are falling as the RBI cuts the repo rate. Which banks still pay the most, and should you lock in before the next cut?
Convert Images to WebP Without Uploading: Complete Guide
Convert images to WebP in your browser: files are 25–35% smaller than JPG at the same quality, with no upload or account. Plus when WebP is the wrong choice.
How to File ITR Online for FY2025-26 (AY 2026-27)
ITR filing for FY2025-26 is open, with a July 31, 2026 deadline. How to file online: choosing the form, documents needed, regime selection and common mistakes.
Base64 Encoding Explained: What It Is and When to Use It
Base64 encoding turns binary data into text so it can travel through text-only channels. How it works, where it's used and the mistakes developers make.
What is a JWT? How to decode and verify JSON Web Tokens
JSON web tokens (JWTs) are everywhere in web auth, but what's inside? Learn to decode, read and verify them instantly without installing anything.
How to minify CSS and JavaScript without a build tool
You don't need Webpack or Vite to minify CSS and JavaScript. Shrink assets in the browser, on the command line or inside your editor.
Old vs New Tax Regime: Which Saves More in FY2026-27?
Old vs new tax regime: the new regime is the default in India but not always better. Use this break-even analysis to see which saves you more.
Regex Cheat Sheet: Patterns Every Developer Needs
A practical regex cheat sheet: character classes, quantifiers, groups, lookaheads and the 12 most useful everyday patterns, with live examples.
SHA-256 vs MD5: which hash algorithm should you use?
SHA-256 vs MD5: MD5 is everywhere but broken for security, and SHA-256 is the modern default. What the difference means for your code, files and passwords.
Build a ₹1 Crore Corpus With SIP: 2026 Step-by-Step Guide
Building a ₹1 crore corpus through SIP is more achievable than most think. How much to invest, for how long, and which assumptions to stress-test first.
Gold and Silver Import Duty Hits 15%: What Buyers Should Do
The government raised gold and silver import duty to 15% effective May 13, 2026 — up from 6%. Here's the real ₹ impact on jewellery, ETFs, and gold SIPs.
Sovereign Gold Bond Matures at 382%: 2018 SGB Payout
Sovereign gold bond SGB 2018-19 Series 1 matures in May 2026 with over 382% returns for 2018 buyers at ₹3,114. The calculation, tax treatment and outlook.
April CPI at 3.48%: What Borrowers and Savers Should Do
CPI inflation India: April retail inflation came in at 3.48%, below the RBI's 4% target. The real ₹ impact on your home loan EMI, FD returns and fuel budget.
Home Loan Rates Fall to 7.10% in May 2026: Buy Now?
Home loan interest rates hit multi-year lows after the RBI's 125 bps cuts, from 7.10%. What it means for affordability, buy vs rent and your best rate.
How to Merge PDFs Without Uploading Them Anywhere (2026 Guide)
Merge PDFs without uploading them to any server: combine invoices, contracts, bank statements and scanned IDs into one file, right in your browser.
New Income Tax Act 2025: ₹12 Lakh Zero Tax and Key Changes
India's new Income Tax Act 2025 is live from April 1, 2026: the ₹12 lakh threshold, 8-city HRA, higher senior deductions and how to pick the better regime.
PNG vs JPG vs WebP vs AVIF: Which Format in 2026?
PNG vs JPG vs WebP vs AVIF: a practical 2026 guide with file-size benchmarks, browser support and when each format wins.
RBI Cuts Repo Rate to 5.25%: What It Means for Your EMI
The RBI has cut the repo rate 125 bps since 2025 to 5.25%. The rupee impact on your home, car and personal loan EMIs, and whether to switch lenders.
CII Wants ₹10 Fuel Excise Cut Rolled Back: Your Petrol Bill
Fuel excise duty: the CII wants the ₹10/litre cut rolled back gradually. Here is the real ₹ impact on your monthly petrol and diesel spend.
PPF 7.1%, NSC 7.7%: Small Savings Rates Frozen Apr–Jun 2026
Small savings rates stay frozen: PPF, NSC and Sukanya Samriddhi are unchanged for April–June 2026, the eighth straight quarter. Why, and what it means.
EPF Interest Rate 2025-26 Stays at 8.25%: Credit Date
The EPF interest rate stays at 8.25% for FY 2025-26, a second year running. When it's credited, how it's calculated and what your EPF really earns.
India's SIP Inflows Hit a Record ₹32,000 Cr in March 2026
SIP inflows record ₹32,087 crore in March 2026, with 9.72 crore active accounts. What this record means for your own SIP and whether to raise it.
Send a WhatsApp Message Without Saving the Number (2026)
WhatsApp without saving number: three reliable ways to message someone without adding them as a contact, using wa.me links, QR codes and click-to-chat buttons.
How to Compress a PDF Without Uploading It Anywhere
Compress a PDF without uploading it: most online compressors send your file to a server. Reduce PDF size to a limit you choose, free, in your browser.
Developer Tools for Beginners: 12 Browser Utilities
Developer tools for beginners: 12 browser utilities that need no install, handle tasks you'd otherwise Google, and work on any device.
10 Browser-Based Alternatives That Don't Upload Your Data
Privacy-first tools that run entirely in your browser: no uploads, no server processing, no account. Your files and data stay on your device.
SIP vs Lump Sum: Which Builds More Wealth in 2026?
SIP vs lump sum: both grow money, but the right pick depends on markets, cash flow and risk tolerance. Here's the honest breakdown and when each wins.
17 New Finance Calculators, All Running Client-Side
From XIRR and APY to Sukanya Samriddhi, Stax adds 17 finance calculators India investors use on Groww, with the same math and no server-side processing.
Stax vs Smallpdf, JSONLint and TinyPNG: Browser vs Cloud
Browser vs cloud tools: five honest comparisons of Stax with popular SaaS alternatives, where each wins, and how to verify the privacy claims yourself.
Cookie Consent in 2026: What Site Owners Must Do
Consent Mode v2, IAB TCF v2.2 and the EU Digital Markets Act are all live. Here's what site operators must ship to stay compliant and keep AdSense revenue.
Format JSON Without Uploading Data: A 2026 Guide
Format JSON without uploading it: most online formatters send your data to a server, which is risky for production data. Do it in your browser instead.
Why we built Stax Tools
300+ free online tools that all run in your browser. Here's why we built Stax and how it's different from the other tool sites.