How to Create Great Images for Your Blog

A practical guide to creating beautiful, original images for your blog posts — sources, sizing, cropping, captions and how to keep load times fast.

By Dailiyo Editorial Team · Published 2026-02-20 · Updated 2026-05-09 · 10 min read

This is one of 10 long-form guides published on Dailiyo. Each article is hand-written by the editorial team and reviewed before publication. The full content loads below.

About this guide

A practical guide to creating beautiful, original images for your blog posts — sources, sizing, cropping, captions and how to keep load times fast.

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Welcome

The small digital tasks of your week, in one quiet place

Dailiyo is a free hub of calculators, converters and short, practical guides that handle the everyday digital chores most of us do without thinking — checking BMI before a doctor visit, working out the EMI on a loan, generating a strong password, converting an image, scaling a recipe for unexpected guests. Tasks that should take seconds, not an afternoon of fighting with popups.

Every tool runs in your browser. Nothing you type leaves your device, there is no sign-up, no monthly limit, no upsell. The site is funded by light, non-intrusive advertising — the same model that lets wikipedia-style resources stay free, applied to a tighter set of specific, useful tools.

We built the kind of site we wished existed when we needed to do quick maths or quickly convert something. If you ever wished a specific calculator or converter existed and could not find a good one, tell us via the Contact page — the most-requested ideas jump to the top of the roadmap.

What you can do here in 30 seconds

Find your BMI, BMR or daily calorie target without making an account
Calculate a loan EMI, savings goal or investment growth projection
Generate a strong password and copy it to your clipboard
Resize, compress or merge images and PDFs without uploading them
Format JSON, decode a JWT, convert HEX to RGB and HSL
Read a short, practical guide on a question you actually have

Browse all tools →

Why people keep coming back

Built around the small jobs you do every week.

20+ Instant Tools

Calculators, converters and helpers that load in milliseconds.

Clean, Ad-light UI

No clutter, no popups — just the tools you came for.

No Sign-up Needed

Use everything right away. Nothing to install or register.

Mobile Friendly

Designed to work great on phones, tablets and desktops.

Six tidy shelves of tools

Browse by category, or jump straight to the search above.

Health & fitness

12 tools

Quick checks before a doctor visit, after a workout, or when something feels off. BMI, BMR, body fat percentage, water intake, sleep cycles and a calorie target you can plan a week around.

BMI · BMR · Body fat · Sleep cycle · TDEE

Open health & fitness →

Finance & money

9 tools

The everyday personal-finance math that keeps slipping past you in spreadsheets. Loan EMIs, compound investment growth, monthly budget tracking, VAT and sales-tax calculations, currency conversion and shipping cost.

Loan EMI · Investment growth · VAT · Currency · Budget

Open finance & money →

Productivity

13 tools

Small tools that quietly save hours a month. Age and date arithmetic, time-zone planning, GPA tracking, word counting for essays and SEO snippets, password generation, colour conversion and a clean printable calendar.

Age · Word counter · Password · Color · Time zone

Open productivity →

Developer

5 tools

The handful of converters every backend or frontend engineer reaches for daily. JSON formatting and validation, JWT decoding, Base64 round-trips, JSON-to-CSV export and a small HTML / CSS / JS playground for snippets.

JSON · JWT · Base64 · HTML playground · CSV

Open developer →

Image & file

10 tools

Image and document tasks without uploading anywhere. Resize, compress, convert PNG to JPG, merge multiple PDFs, combine images into a single PDF, draw and download a transparent-PNG signature.

Resize · Compress · PNG ↔ JPG · Merge PDF · Signature

Open image & file →

Network & web

2 tools

Diagnostics and lookups that answer "what is going on" in seconds. IP geolocation, weather and air-quality for any city.

IP lookup · Weather · Air quality

Open network & web →

Featured tools

Pick a category or search for what you need.

BMI Calculator

Free BMI calculator. Enter your height and weight to find your Body Mass Index and category — works in metric and imperial units.

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Ideal Weight Calculator

Find a healthy ideal weight range from your height using Devine, Robinson and BMI methods.

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Body Fat Percentage Calculator

Detailed body fat percentage calculator using neck, waist and hip measurements with charts.

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Smart Calorie Calculator (BMR & TDEE)

Get BMR, TDEE and daily macro split in one go. Built for cutting, bulking and maintenance.

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Water Intake Calculator

How much water should you drink each day? Personalized estimate by weight, climate and activity.

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Calories Count Calculator

Add common foods and get a quick total calorie count for the meal or day.

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Walk to Lose Weight Calculator

How long do you need to walk to lose a kilo? Calculate steps, distance and calories burned.

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Sleep Cycle Calculator

Find the perfect bedtime or wake-up time based on 90-minute sleep cycles.

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Pregnancy Due Date Calculator

Estimate your due date and current week of pregnancy from your last period date.

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Weight & Diet Chart

Generate a balanced 7-day diet chart based on your weight, goal and food preference.

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Weight & Workout Plan

Build a weekly home or gym workout plan tailored to your fitness level and goal.

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Recipe Calculator

Scale a recipe up or down by servings and see total calories, protein, carbs and fat.

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Loan Repayment Calculator

See your full loan repayment schedule month by month, including extra payment scenarios.

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Investment Growth Calculator

Project how your money grows with compound interest, monthly contributions and inflation.

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Savings Calculator

Plan how much to save each month to reach a financial goal by a target date.

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VAT Calculator

Add or remove VAT/GST/Sales tax at any percentage. Works for invoices and quick checks.

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Sales Profit Calculator

Calculate profit, margin and markup from cost and selling price for a product or order.

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Currency Converter

Convert between major world currencies with reference rates updated regularly.

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Monthly Income & Expenses

Add up your monthly income and expenses to see what you save (or overspend) each month.

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Shipping Cost Calculator

Estimate parcel shipping cost from weight, dimensions and a per-kg rate.

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Land Calculator

Convert and calculate land area between katha, decimal, square feet, square meter and acre.

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Age Calculator

Calculate exact age in years, months, weeks, days, hours and minutes from any birth date.

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Date Count Calculator

Find how many days, weeks, months or years are between two dates.

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Date Convert to Major Calendars

Convert a date between Gregorian, Hijri (Islamic) and Bengali calendars instantly.

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Time Zone Converter

Convert times across multiple time zones at once. Plan meetings without the math.

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Online Calendar Tool

A clean monthly calendar you can browse, print or use for quick date math.

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Leave Calculator

Count working days between two dates excluding weekends and your custom holidays.

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GPA Calculator

Calculate semester GPA and cumulative GPA across multiple terms.

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Word Counter

Count words, characters, sentences, paragraphs and estimated reading time as you type.

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Secure Password Generator

Generate strong, random passwords with custom length, symbols, numbers and case.

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Roman Numeral Converter

Convert numbers to Roman numerals (and back) up to 3,999,999.

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Universal Unit Converter

A one-stop universal converter covering 10 categories of common units.

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Color Converter

Convert color codes between HEX, RGB and HSL with a live preview swatch.

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Carbon Footprint Calculator

Estimate your annual CO₂ footprint from transport, electricity, diet and lifestyle.

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Base64 Converter

Encode text or files to Base64 and decode them back, all in your browser.

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JSON Formatter & Validator

Format, validate, minify and explore JSON with clear error messages.

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JWT Decoder

Decode and inspect JSON Web Tokens (JWT) header and payload safely in the browser.

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JSON to CSV Converter

Paste any JSON array of objects and get clean CSV ready to download.

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HTML Code Compiler

Write HTML, CSS and JavaScript and see the live result side by side.

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PNG to JPG Converter

Convert PNG images to high-quality JPG (JPEG) right in your browser, no upload needed.

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Image Resize

Resize PNG, JPG and WEBP images to any dimensions while keeping aspect ratio.

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Image Compressor

Reduce image file size while keeping it sharp. JPG, PNG and WEBP supported.

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Image to PDF

Combine JPG, PNG or WEBP images into a single PDF document, ordered the way you want.

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Word to PDF Converter

Convert your Word documents to clean PDFs you can email and print.

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Merge Multiple PDF Files

Drag, drop and merge multiple PDF files into a single document, all client-side.

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Video to MP3

Pick a video file and extract just the audio track for download.

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Remove Backgrounds Instantly

Drop a photo and remove the background instantly using on-device AI.

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Signature Converter

Draw a signature on the canvas and download it as a transparent PNG.

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Online Barcode Generator

Generate Code128, EAN-13 and QR style barcodes you can print or download.

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IP Address Lookup

See your public IP address along with approximate location, ISP and timezone.

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Weather & Air Quality

Check current weather and air quality for any city — quick, no signup.

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Why this site exists

Quiet, accurate, free — in that order

The web is full of "free calculator" pages that bury the answer under five tabs of popups. We built Dailiyo on the opposite premise.

Your inputs stay on your device

Calculators run entirely in your browser using standard web APIs. We do not log, store or transmit the numbers you type. The only data the server ever sees is anonymous page-view counts.

Formulas are standard, sourced and explained

We use the formulas professional bodies recommend — Mifflin-St Jeor for BMR, the Navy circumference method for body fat, standard EMI amortisation for loans. Each tool's About section names the source.

No popups, no chat bots, no sign-up walls

A clean page with the tool you came for, a short explanation underneath, and a footer. The site is supported by a small number of well-placed ads — not interstitials, not autoplay video, not "subscribe for the answer".

Designed for phones first

Most readers reach Dailiyo from a phone in the middle of doing something else. Every tool is built to work in a single screen, with touch-friendly inputs, on a 4G connection.

Free everywhere, in every currency

No regional paywalls. The loan and currency tools work for any currency you enter; the unit converter handles imperial and metric; the land calculator handles katha and bigha alongside acres and hectares.

Tested against trusted references

Every calculator is verified against at least one authoritative source and one independent implementation before publishing. When a recommendation changes (new BMI ranges, revised protein guidance), we rewrite the page rather than patch it.

Want to see how we pick formulas, write content and keep tools current? Read the Methodology page — and meet the team behind the work on the Editorial page.

How we build, source and review every tool

A transparent look at our methodology and editorial standards.

Sourced from standard references

Every calculator on Dailiyo starts with a published formula or a widely accepted clinical, financial or technical reference. We document that source on the tool's About section — for example, BMR uses Mifflin-St Jeor (1990), BMI thresholds follow the WHO adult bands, loan amortisation uses the standard reducing-balance formula, and body fat uses the U.S. Navy circumference method. If we cannot link back to a defensible source, the tool does not ship.

Rigorous review workflow

Articles go through a draft → editorial review → fact-check → publish workflow. A second editor reviews every article before it goes live. Health and finance pieces are additionally checked against authoritative bodies (WHO, CDC, ESC, NICE, FCA and the relevant academic source); technology and lifestyle pieces are checked for accuracy by a domain editor.

Maintained and updated

We review every tool at least once a year and update it whenever the underlying formula, regulation or guideline changes. Corrections are made promptly when reported, and significant changes are noted in the article footer so returning readers can see what shifted. Our full process is documented on the Methodology page.

No white-label widgets

We do not, under any circumstances, accept payment in exchange for editorial coverage. We do not embed third-party calculator widgets and re-skin them as our own. We do not buy "white-label" content packs. Every line of body copy on this site has been written by a human on the Dailiyo team.

From the blog

Short, useful reads — updated through the week.

2026

Symptoms of Diabetes

A practical guide to the early signs and symptoms of type 1 and type 2 diabetes — what to watch for and when to see a doctor.

2026

Why Am I Tired All The Time?

A friendly guide to the most common reasons behind constant tiredness, the cheap blood tests worth requesting, and the lifestyle changes with the biggest impact.

2026

How to Create Great Images for Your Blog

A practical guide to creating beautiful, original images for your blog posts — sources, sizing, cropping, captions and how to keep load times fast.

2026

Futuristic Gadgets You Can Buy

Real, shippable gadgets that feel like they came from next year — translation earbuds, smart rings, e-paper laptops and how to avoid the hype trap.

2026

Fashion Photographers in Front of Camera

Why some of the best fashion photographers chose to be photographed themselves — and what their reluctance teaches the rest of us.

2026

Disease Symptoms & Recovery

How everyday illnesses present, how recovery typically goes, the four buckets they fall into, and when a symptom actually needs a clinician.

2026

How to Set Up Autopay

A simple guide to setting up automatic bill payments safely — which accounts to use, which bills belong on autopay, and how to avoid overdraft surprises.

2026

How to Read Food Labels

A plain-English guide to nutrition labels — serving sizes, %DV, sugar and salt thresholds, ingredient ordering and the marketing claims worth ignoring.

2026

What to Do With Your First $1,000 Saved

Why your first $1,000 is a buffer, not investment capital — the three buckets, regional differences, and the cost of jumping into investing too early.

2026

The Hidden Cost of Notifications

How notifications quietly eat focused work — the 23-minute number, attention residue research, an audit method and a four-tier triage system.

Common questions about Dailiyo

Quick answers to the questions readers email us most often.

Is Dailiyo really free?

Yes — every tool and guide on the site is free to use, with no sign-up, no per-month limits and no premium tier. The site is funded by light advertising rather than subscriptions or paywalls. If you ever hit a "pay to continue" wall, it is not from us — please email so we can investigate.

Do you store the numbers I type into a calculator?

No. Calculations run entirely in your browser using standard JavaScript. The values you enter are not transmitted to our servers and are not saved anywhere — close the tab and the inputs are gone. The only data the server ever sees from a tool page is an anonymous page-view ping.

How accurate are the calculators?

Every calculator uses the formula recommended by the relevant professional body (Mifflin-St Jeor for BMR, U.S. Navy circumference method for body fat, standard EMI amortisation for loans, etc.). Each tool's About section names the source. Results match those references to the precision the formula supports — typically within 1–3% of any other implementation of the same formula.

Can I trust the health and finance tools for serious decisions?

They are general-purpose tools, not professional advice. The Health calculators are a starting point, not a diagnosis — for anything affecting medical decisions, consult a clinician. The Finance calculators do not replace a qualified financial advisor. The Disclaimer page covers this in more detail.

Do the tools work offline?

Once a page is loaded, most calculators continue to work without an internet connection — they run in your browser. A few specific tools (currency converter, weather lookup, IP lookup) call live APIs and need network access for fresh data.

Can I use the tools on my phone?

Yes. The whole site is built phone-first. Inputs are touch-friendly, results are readable on small screens, and the navigation collapses to a single hamburger menu on mobile.

How do I report a bug or request a new tool?

Open the Contact page and send a message. The editorial inbox is read by a human within 24 hours on weekdays. Bug reports are confirmed and fixed within 48 hours; tool requests get a brief reply and jump into the build queue if they are useful to a broad audience.

Where do the formulas and recommendations come from?

From peer-reviewed publications and the official guidance of professional bodies — the same sources clinicians, dietitians and financial planners use. The Methodology page explains the editorial process and the Editorial team page covers who writes for the site.

About Dailiyo

One quiet hub for everyday digital chores

Dailiyo started with a simple frustration — every small task ended in five tabs of ads, popups and sign-up walls. So we put the most useful calculators, converters and short guides under one clean roof.

Whether you are checking BMI before a check-up, converting an image for a job application or counting words for a school report, the goal is the same: get in, get the answer, get on with your day.

Get in touch

Have a request, found a bug, or want to partner up? We read every message.

Emailinfo@dailiyo.xyz
ResponseUsually within 24 hours