Free Online Tools

Browse free image, PDF and SEO utilities for file conversion, optimization, document work, campaign tracking and technical SEO tasks.

Free to use No signup Mobile friendly

Image Transparency & Alpha Inspector

Inspect transparent, partial and opaque pixels, alpha histograms, content bounds and pixel values. Export an alpha mask or report.

Image Tools→

CSS Object-Fit & Focal Point Calculator

Choose an image focal point, compare desktop and mobile crops, and generate responsive object-fit and object-position CSS.

Image Tools→

Print Scale & Ruler Calibration Calculator

Correct print scaling from measured reference lengths, compare both axes and download a calibration ruler.

Image Tools→

Print Bleed & Safe Area Calculator

Calculate artwork dimensions, trim size, safe margins and pixel dimensions for print projects.

Image Tools→

Image Print Size & DPI Calculator

Calculate print dimensions, required pixels and effective PPI from image size and print measurements.

Image Tools→

Number Base Converter & Bitwise Calculator

Convert exact integers between bases 2–36 and inspect fixed-width bitwise calculations, bit patterns and bytes.

SEO & Utilities→

Unix Timestamp & Date Converter

Convert Unix timestamps and ISO dates with nanosecond precision, batch validation and time-zone displays.

SEO & Utilities→

UUID Generator, Validator & Inspector

Generate v4, v5 and v7 UUIDs, validate batches, inspect timestamps and export complete reports locally.

SEO & Utilities→

Hash Generator & File Checksum Verifier

Hash text or batch files with six algorithms, compare expected checksums and export complete reports locally.

SEO & Utilities→

Regex Tester & Text Replacer

Test JavaScript regular expressions, inspect every match and capture group, and preview text replacements locally with complete reports.

SEO Tools→

CSV, TSV & JSON Converter

Convert CSV or TSV to JSON and back, inspect columns and rows, preserve exact values and export locally with explicit format settings.

SEO Tools→

Text Compare & Difference Checker

Compare two texts, inspect added and removed lines, control comparison settings and export complete difference reports locally.

SEO Tools→

JSON Formatter, Validator & Tree Explorer

Format, minify and validate JSON without rounding numbers. Preserve duplicate keys, browse nested values and navigate with JSON Pointer.

SEO Tools→

URL Encoder, Decoder & Query String Editor

Encode or decode URL text, edit ordered query parameters and keep control of spaces, duplicates and tracking keys. Export text, JSON or CSV locally.

SEO Tools→

Image to Base64 Converter & Decoder

Encode images as Base64, data URIs, HTML, CSS or JSON. Decode locally and restore the original image bytes with a verified round trip.

Image Tools→

Image Compare & Difference Checker

Compare image revisions with reveal, overlay and heatmap views. Inspect pixel differences and export full-resolution masks and numeric reports.

Image Tools→

Photo Editor & Image Adjustments

Adjust exposure and colour, apply filters, sharpen, rotate and flip. Compare your original, undo changes and export full-resolution images.

Image Tools→

Image Splitter & Seamless Carousel Maker

Split photos into exact grids, strips or seamless carousel slides. Preview numbered pieces and download images or a ZIP.

Image Tools→

Website Spam & SEO Risk Checker

Review website HTML for spam and SEO risk signals, with clear findings and an exportable report.

SEO Tools→

Favicon & App Icon Generator

Create logo or text icons, multi-size ICO, Apple touch and maskable PNGs, a manifest and an installation ZIP.

Image Tools→

Image Blur, Pixelate & Redact

Blur, pixelate or cover selected details. Edit multiple regions and export at full resolution.

Image Tools→

Image Metadata Viewer & Remover

Inspect photo metadata and create cleaned copies. Local EXIF and GPS checks with batch ZIP downloads.

Image Tools→

Image Color Picker & Palette Generator

Pick colors from images, build palettes, check contrast and export colors, gradients or swatch boards.

Image Tools→

Schema Markup Generator & JSON-LD Checker

Build structured data with 13 template families, combine entities, check fields and export JSON-LD or HTML snippets.

SEO Tools→
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Percentage & Discount Calculator

Work out percentages, stacked discounts, tax amounts, margins and bill splits with clear steps and batch reports.

Calculators→
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Age & Date Calculator

Calculate age, days between dates, future dates and working days with custom weekends, holidays and calendar export.

Calculators→
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Word Counter & Text Cleaner

Count words and characters, check repeated phrases, track writing limits and clean text with multilingual support and Undo.

SEO & Writing→
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Invoice & Quotation Generator

Create branded invoices, quotations and pro formas with precise totals, tax options, discounts, PDF downloads and reusable drafts.

PDF & Business→
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QR Code Generator & Reader

Create scan-checked QR codes for links, Wi-Fi, contacts and WhatsApp. Download images, SVG, PDF or batches, and read QR images locally.

SEO & Marketing→
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Photo Collage & Image Combiner

Combine photos in grids, side-by-side comparisons and strips. Adjust crops, add captions and export a full-size image.

Image Tools→

Batch Image Watermark

Add text and logo watermarks to multiple photos, with repeated patterns, independent layers and ZIP downloads.

Image Tools→
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Image Converter

Convert HEIC, JPG, JPEG, PNG, WebP, GIF, BMP, TIFF, ICO, AVIF, HEIF and JP2 images with batch ZIP download.

Image Tools→
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Image Compressor

Reduce image file size in your browser while keeping the result visually clear.

Image Tools→
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Resize Image

Change image dimensions by pixels while keeping the aspect ratio when needed.

Image Tools→
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Crop Image

Crop images to custom dimensions or common aspect ratios directly in your browser.

Image Tools→
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Background Remover

Remove an image background and download a transparent PNG cutout.

Image Tools→
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Passport Photo Maker

Create passport, visa and ID photos with country presets, face guides, background tools, quality checks and print sheets.

Image Tools→
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Image to PDF

Turn multiple JPG, PNG or WebP images into one clean PDF document.

Image Tools→
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Merge PDF

Combine multiple PDF files into one document in the order you choose.

PDF Tools→
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Split PDF

Extract selected pages or split a PDF into individual page files.

PDF Tools→
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Compress PDF

Reduce PDF file size by rebuilding pages at a smaller image footprint.

PDF Tools→
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PDF to JPG / PNG

Export PDF pages as high-quality JPG or lossless PNG images with page ranges, up to 300 DPI and ZIP download.

PDF Tools→
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Add Watermark to PDF

Add text, logo or tiled watermarks to selected PDF pages with preview.

PDF Tools→
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Sign PDF

Sign PDFs with drawn, typed or uploaded signatures plus initials, dates and text.

PDF Tools→
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PDF to Word

Convert PDF documents to DOCX in your browser with no signup.

PDF Tools→
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Word to PDF

Convert DOCX files to PDF while preserving document layout as accurately as possible.

PDF Tools→
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PDF Editor

Reorder, rotate or remove PDF pages and export a new edited PDF.

PDF Tools→
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UTM Builder

Build campaign tracking URLs with clean UTM source, medium, campaign, term and content parameters.

SEO Tools→
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Meta Tag Generator

Generate title, description, canonical, Open Graph and Twitter meta tags for a webpage.

SEO Tools→
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Robots.txt Generator

Create a simple robots.txt file with allow, disallow, crawl-delay and sitemap directives.

SEO Tools→
XML

XML Sitemap Generator

Create a clean XML sitemap from a list of URLs and download or copy the result.

SEO Tools→
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Redact PDF

Mark private text or images, review sensitive-data candidates and rebuild an image-only PDF locally. No signup.

PDF Tools→
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Compare PDF

Compare two document versions with text changes, visual highlights, page pairing and downloadable reports. Free, without signup.

PDF Tools→
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OCR PDF & Image

Recognize text in scanned PDFs and images, review confidence, and export searchable PDF, Word, TXT or OCR data.

PDF Tools→
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PDF to Excel & CSV

Extract editable tables from text or scanned PDFs, review cells, then export XLSX, CSV, JSON or ZIP.

PDF Tools→
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PDF to PowerPoint

Turn PDF pages into PPTX slides with appearance-preserving or editable-text modes, page selection and slide controls.

PDF Tools→
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PDF Form Filler

Fill PDF fields, check boxes and add text to flat forms. Save an editable or flattened copy in your browser.

PDF Tools→

Recognize text in scans

OCR PDF & Image turns scanned pages and images into editable text and can create searchable PDF and Word outputs. Review OCR confidence before using important names, dates or numbers.

Find the right tool by task

UVs Tool Hub groups tools by what you are trying to accomplish rather than by software package. Use Image Tools for file formats and visual assets, PDF Tools for document structure and conversion, and SEO Tools for campaign or website implementation tasks.

Image conversion and optimization

Use the full Image Converter for multi-format conversion, or open a dedicated shortcut such as HEIC to JPG, JPG to WebP or PNG to JPG. Compression, resizing and cropping tools handle common browser-readable formats locally.

PDF document tools

Merge PDF, Split PDF and PDF Page Editor are browser-side. PDF to JPG / PNG exports PDF pages as high-quality images, while PDF-to-Word and Word-to-PDF run locally without a paid document-conversion service. Sign PDF adds drawn, typed or uploaded signatures plus initials, dates and text directly in the browser.

SEO implementation tools

The SEO section includes a UTM campaign URL builder, metadata generator, robots.txt generator and XML sitemap generator. They help produce clean implementation assets while leaving strategic decisions to you.