Privacy and Security
How to Unlock a PDF You Own: Remove the Password or Print Restrictions
Stop typing a password every time, or lift print and copy restrictions, on your own PDFs. Needs the password you already know.
The shobfree blog
Guides that get your file work done
Step-by-step tutorials for PDF, images, documents and everyday tools. Simple, practical and free.
Latest articles
Everyday Tools
How to Test and Improve Your Typing Speed (WPM and Accuracy)
Measure your typing speed in words per minute, check your accuracy and follow simple practice habits to get faster over a few weeks.
PDF Guides
How to Split a PDF: Extract Pages or Divide One File Into Many
Learn how to split a PDF by page ranges, pull out single pages or separate chapters, for free and without installing software.
PDF Guides
How to Sign a PDF Without Printing (Draw, Upload and Place Your Signature)
Sign a PDF online for free: draw your signature, upload a photo of it and place it exactly where it belongs, with no printing or scanning.
Privacy and Security
How to Share Sensitive Documents Online Safely: A Practical Checklist
Before you email a passport, NID or contract, follow these steps: remove extra pages, add a watermark, compress, protect with a password and share safely.
Documents and Office
How to Scan Documents With Your Phone: Straight, Clean and as One PDF
Turn phone photos of pages, NID cards and receipts into clean scans and save them as a single PDF, right in your browser.
Images and Photos
How to Reduce Image Size to 50 KB, 100 KB or Any Limit
Upload forms often limit photos to 20, 50 or 100 KB. Learn how to shrink a picture to an exact KB size while keeping it clear and readable.
PDF Guides
Compress, merge, split, convert, sign and protect PDF files without losing quality.
PDF Guides
How to Split a PDF: Extract Pages or Divide One File Into Many
Learn how to split a PDF by page ranges, pull out single pages or separate chapters, for free and without installing software.
PDF Guides
How to Sign a PDF Without Printing (Draw, Upload and Place Your Signature)
Sign a PDF online for free: draw your signature, upload a photo of it and place it exactly where it belongs, with no printing or scanning.
PDF Guides
How to Convert a PDF to an Editable Word Document (Free, Online)
Turn a PDF into an editable Word (DOCX) file for free. Learn what converts well, what to do with scanned PDFs, and how to fix layout issues.
PDF Guides
How to Merge PDF Files Into One Document (Free, in Any Order)
Combine several PDFs into one file in the order you choose. Step-by-step guide with tips for application forms, certificates and reports.
Images and Photos
Resize, compress and convert pictures, and get passport and form photos right the first time.
Images and Photos
How to Reduce Image Size to 50 KB, 100 KB or Any Limit
Upload forms often limit photos to 20, 50 or 100 KB. Learn how to shrink a picture to an exact KB size while keeping it clear and readable.
Images and Photos
How to Make a Passport Size Photo Online (Exact Size, Print Sheet and KB Limit)
Create passport, visa and job-form photos in the exact size you need, with a 4x6 print sheet and an optional KB limit, from any picture.
Images and Photos
How to Convert HEIC to JPG: Open iPhone Photos on Any Device
iPhone photos saved as HEIC will not open on many computers or forms. Convert HEIC to JPG for free, keep the orientation and upload anywhere.
Images and Photos
How to Compress Images for Email, Forms and Websites Without Visible Loss
Make pictures smaller for email, uploads and faster websites. Learn the right quality level, when to use JPG or PNG, and how to compress safely.
Documents and Office
Word, scans, CVs and invoices: finish everyday paperwork faster.
Documents and Office
How to Scan Documents With Your Phone: Straight, Clean and as One PDF
Turn phone photos of pages, NID cards and receipts into clean scans and save them as a single PDF, right in your browser.
Documents and Office
How to Make a Professional CV Online for Free (Bangla and English)
Build a clean, professional CV as a PDF in minutes. Learn what to include, how to write each section and how to avoid common CV mistakes.
Documents and Office
How to Extract Text From an Image or Scan (Free OCR for Bangla and English)
Copy text out of a photo, screenshot, scan or certificate without retyping. Learn how OCR works and how to get the cleanest result.
Documents and Office
How to Create a Simple Invoice Online: Items, Discount, Tax and PDF
Make a clear invoice PDF for your shop or freelance work. Learn what an invoice must contain and how totals, discount and tax are calculated.
Everyday Tools
Calculators, QR codes, counters and small utilities that save time every day.
Everyday Tools
How to Test and Improve Your Typing Speed (WPM and Accuracy)
Measure your typing speed in words per minute, check your accuracy and follow simple practice habits to get faster over a few weeks.
Everyday Tools
How to Make a Free QR Code With Your Logo and Colours (PNG and SVG)
Create QR codes for a link, WiFi, WhatsApp or contact card, add your logo and colours, and download PNG, JPG or print-ready SVG.
Everyday Tools
How to Count Words and Characters Online (Essays, Ads and SEO Limits)
Count words, characters, sentences and reading time as you type, in Bangla or English. Useful for essays, ads and meta descriptions.
Everyday Tools
How to Calculate Exact Age From Date of Birth (Years, Months and Days)
Find your exact age in years, months and days, or the age on a certain date for a job application, with the free age calculator.
Privacy and Security
Share and store documents safely, and understand what online tools do with your files.
Privacy and Security
How to Unlock a PDF You Own: Remove the Password or Print Restrictions
Stop typing a password every time, or lift print and copy restrictions, on your own PDFs. Needs the password you already know.
Privacy and Security
How to Share Sensitive Documents Online Safely: A Practical Checklist
Before you email a passport, NID or contract, follow these steps: remove extra pages, add a watermark, compress, protect with a password and share safely.
Privacy and Security
How to Password Protect a PDF Before You Email It (AES-256, Free)
Lock a PDF with a strong password so only the right person can open it. Learn how to choose a password and share it safely.
Privacy and Security
How to Add a Watermark to a PDF: Confidential, Draft or Your Name
Stamp text such as Confidential or your business name across every page of a PDF, with your choice of colour, size, angle and opacity.
Bangladesh and Bangla
Bijoy to Unicode, GPA, income tax and savings calculators for Bangladesh.
Bangladesh and Bangla
How to Estimate Your Income Tax in Bangladesh (Salary, Rebate and Thresholds)
Understand the tax-free threshold, the salary exemption and the investment rebate, and get a quick tax estimate with a free calculator.
Bangladesh and Bangla
How to Convert Bijoy Text to Unicode Bangla (Free Online Converter)
Old documents typed in Bijoy show wrong letters on websites and phones. Convert Bijoy text to Unicode Bangla in your browser, instantly.
Bangladesh and Bangla
How to Calculate SSC and HSC GPA in Bangladesh (4th Subject Rule Explained)
Understand how GPA is calculated from grade points, how the 4th subject adds marks, and check your result with a free GPA calculator.
Bangladesh and Bangla
How to Calculate FDR and DPS Returns in Bangladesh (Interest, Tax and Maturity)
See what your fixed deposit or monthly savings scheme will be worth, with quarterly interest and tax at source, using a free FDR and DPS calculator.