Every AltFTool tool — 13,947 free online tools

AltFTool is a free website with 13,947 online tools — converters, PDF and image editors, calculators, developer utilities, generators and browser games — that open straight in a browser tab with no account and no paid tier.

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API Stress Estimator

Estimate the stress on your API under different traffic scenarios and configurations, using an M/M/c queueing model.

VerifiedDeveloper

Open

JSON Editor

Validate, format, minify, and convert JSON snippets.

VerifiedDeveloper

Open

CSV Converter

Convert CSV into JSON, HTML, XML, SQL inserts, or Python dictionaries.

VerifiedConverters

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CSV to JSON

Convert CSV file or text into JSON format

VerifiedDeveloper

Open

Text Case Converter

Convert text into sentence, title, upper, lower, camel, snake, and kebab case.

VerifiedDeveloper

Open

Word & Character Counter

Count words, characters, sentences, paragraphs, and reading time instantly.

VerifiedDeveloper

Open

URL Encoder Decoder Tool

Encode and decode URLs instantly for safe web usage.

VerifiedDeveloper

Open

Base64 to Text

Decode Base64 strings into readable UTF-8 text, with padding repair, URL-safe alphabet support and a validity check.

VerifiedDeveloperConverters

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Text to Base64

Encode text into Base64 and decode Base64 locally.

VerifiedConverters

Open

Base64 to Image

Decode a Base64 string or data URL back into an image, identify its real format from the file signature, and read its pixel dimensions.

VerifiedImage & PhotoConverters

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Base64 to PDF

Decode a Base64 string or data URL back into a PDF, preview it, and check its version, page objects, encryption and trailer.

VerifiedPDF & DocumentsConverters

Open

File to Base64

Convert local files into Base64 strings and data URLs without uploading them.

VerifiedConverters

Open

Image to Base64

Convert uploaded images into Base64 data URLs for quick embedding.

VerifiedDeveloper

Open

Image Compressor

Compress images instantly and reduce file size efficiently.

VerifiedMarketing & SocialDesign & Color

Open

Image Resizer

Resize images with custom dimensions, social media presets, fit/crop modes, batch processing, and format export.

VerifiedDesign & Color

Open

Image Cropper

Crop your image according to your needs

VerifiedDesign & Color

Open

PDF Merger Tool

Merge multiple PDF files quickly into a single document.

VerifiedPDF & Documents

Open

PDF Split Tool

Split PDFs by page, fixed batches, custom ranges, extraction, or page removal with browser-side ZIP/PDF export.

VerifiedPDF & DocumentsBusiness

Open

PDF to Base64

Convert a local PDF into a Base64 data URL in your browser, with the exact encoded size and a header check.

VerifiedPDF & DocumentsConverters

Open

PDF to Image Converter

Convert PDF pages into PNG, JPG, or WebP images in your browser.

VerifiedPDF & Documents

Open

SVG to Image

Rasterise SVG markup to a downloadable PNG, JPEG or WebP at any scale, entirely in your browser.

VerifiedConverters

Open

QR Generator

Generate QR codes instantly for links, text, and data.

VerifiedDeveloper

Open

Password Generator

Generate strong random passwords with flexible character controls.

VerifiedSecurity & Privacy

Open

Regex Tester

Test and validate regular expressions instantly with live results.

VerifiedDeveloperAI Tools

Open

Trusted & SafeAll tools are tested and verified for security.

Always UpdatedWe keep our directory fresh and accurate.

Free to UseMost tools are completely free to use.

Community DrivenBuilt for creators by productivity lovers.

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