Everyday tools thatstay on your device.
Simple tools for the work that needs to get done — generate documents, calculate numbers, format data, and decode tokens, directly in your browser. Built for freelancers, small businesses, agencies, developers, and creators. No account, nothing uploaded.
Featured Tools
Explore some of our most useful tools, or browse the full collection by category.
View All ToolsJSON Formatter
Format, validate, and beautify JSON data.
Local processingUse ToolJWT Decoder
Decode JWT tokens and inspect claims, expiry, and signature.
Local processingUse ToolBase64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text.
Local processingUse ToolFormat Converter
Convert between JSON, YAML, and escaped strings.
Local processingUse ToolCSV Cleaner
Remove empty rows/columns, trim whitespace, and fix common CSV formatting issues.
Local processingUse ToolCSV to JSON Converter
Convert CSV data into a JSON array of objects, right in your browser.
Local processingUse ToolPDF Merger
Combine multiple PDF files into one, in the order you choose.
Local processingUse ToolImages to PDF
Convert JPG, PNG, or WebP images into a single PDF.
Local processingUse ToolResume ATS Checker
Score your resume against ATS rules and a job description.
Local processingUse ToolQR Code Generator
Generate QR codes for URLs, UPI payments, WiFi, and contact cards.
Local processingUse ToolGST Invoice Generator
Create GST-compliant invoices with CGST, SGST and IGST calculations.
Local processingUse ToolEMI Calculator
Calculate monthly EMI, total interest, and amortization schedule.
Local processingUse ToolCTC Salary Calculator
Convert CTC to exact monthly in-hand salary.
Local processingUse ToolWe're building more tools you'll love. Request one →
Generate MD5, SHA-1, SHA-256, SHA-512 hashes instantly in the browser.
Convert Unix timestamps to human-readable dates and vice versa.
Compare two JSON objects and highlight exactly what changed.
AI-powered resume score — find out why your resume is getting rejected.
Browse by Category
Every tool belongs to one category — start there if you're not sure which tool you need.
Developer
JSON, JWT, and encoding tools for technical workflows.
JSON Formatter · JWT Decoder · Base64 Encoder / Decoder
View toolsFinance
Loan and salary calculators for everyday money decisions.
EMI Calculator · CTC Salary Calculator
View toolsBusiness
Invoicing and GST tools for freelancers and small businesses.
GST Invoice Generator
View toolsCareer
Resume and job-search tools.
Resume ATS Checker
View toolsUtility
Everyday tools that don't fit a single category.
QR Code Generator
View toolsData
Clean, merge, split, and convert CSV and JSON data — entirely in your browser.
CSV Cleaner · CSV Merger · CSV Deduplicator
View toolsDocuments
Merge, split, compress, and convert PDFs and images — entirely in your browser.
PDF Merger · PDF Splitter · PDF Compressor
View toolsPrivate by Design
Processing runs in your browser. Your invoice data, JSON, and tokens aren't uploaded to a server.
Open and Use
No account, no email, no credit card. Open a tool and get your result.
Regional Where It Matters
Global tools for developers and businesses everywhere, plus India-specific tools like GST invoicing and CTC calculators for teams that need them.
From blank page to finished output in three steps.
Every tool follows the same flow, whether you're formatting JSON or generating an invoice.
Pick a tool
Open JSON Formatter, JWT Decoder, Invoice Generator, or any tool from the catalog — no login required.
Work in your browser
Paste, type, or upload your data. Every calculation and formatting step runs locally on your device.
Download or copy
Export a PDF, copy formatted output, or grab decoded claims — no round trip to a server.
Frequently asked questions
Are Devora's tools actually free?
Yes, completely free. No signup, no credit card, no watermark limits on any tool.
Does Devora store my data?
No. All processing happens locally in your browser. Your invoice data, JSON, and tokens never leave your device.
Can I use Devora without creating an account?
Yes. All tools work without any login or account creation.
Why developers, freelancers, and businesses use Devora
Built on Local Processing
Every tool on Devora runs entirely in your browser. JWT tokens, API keys, JSON payloads, and invoice data you paste in are processed on your device and never transmitted to our servers.
Free GST Invoice Generator for India
For Indian businesses and freelancers: our free GST invoice generator creates professional invoices with correct CGST + SGST (intrastate) or IGST (interstate) calculations, bank details, and amount in words — downloadable as PDF in 60 seconds, with zero signup.
From the blog
Practical guides for Indian freelancers and developers
How to Send a GST Invoice as a Freelancer
The fields, the tax types, and the common mistakes that get invoices sent back.
Old Regime vs New Regime 2025-26
The calculation that decides which regime actually saves you money.
What Nobody Tells You About Home Loans
How much of your EMI actually goes toward principal in the early years.
GST Registration for Freelancers — The Real Answer
When you actually need it, when you don't, and what happens with foreign clients.
Free Developer & Business Tools
Devora is a set of browser-based tools for developers, freelancers, agencies, and small businesses — no login, no credit card, no subscriptions. India-specific tools like GST invoicing and CTC calculators are also included.
Format, validate and beautify JSON instantly. Pretty print with indentation, minify for production, sort keys alphabetically, and get exact error locations with line numbers. 100% browser-based — safe for sensitive API payloads and config files.
Decode JWT tokens to inspect header, payload and signature. Check token expiry, view all claims, verify HMAC signatures with a secret key. Supports HS256, RS256 and all standard JWT algorithms. Tokens never leave your browser.
Generate QR codes for URLs, UPI payments (Google Pay, PhonePe, Paytm), WiFi credentials, vCard contact cards, plain text, email, phone and SMS. Custom colors, error correction levels, download as PNG or SVG. No watermark, unlimited, free.
Create GST-compliant invoices with automatic CGST + SGST (intrastate) or IGST (interstate) calculation. Download as PDF instantly. Choose from 4 professional templates. No watermark, no login. Built for Indian freelancers, consultants, designers and small businesses.
Convert your CTC to exact monthly take-home salary. Covers PF, Professional Tax, HRA exemption, 80C, 80D and NPS deductions. Compare old regime vs new regime (FY 2025-26 Budget 2025 slabs). Includes Section 87A rebate calculation.
Calculate monthly EMI for home loans, car loans, personal loans and education loans. Full month-by-month amortization schedule, year-wise payment summary, and EMI comparison at different interest rates. Preset rates for SBI, HDFC and major Indian banks.
Why Devora?
Most developer tools require a login, show ads, or add watermarks on output. Devora doesn't — every tool is free to use and runs privately in your browser. Alongside the global developer and business tools, Devora also supports India-specific needs: GST-compliant invoicing with CGST/SGST/IGST calculations, Indian salary structures, and UPI-ready payment details.