24 free tools for people who create content, edit video, sell online or run paid traffic. Everything runs in your browser: no file is sent to a server, with no sign-up and no usage limit. Pick one from the menu or from the full list.
Create high-resolution QR Codes for links, PIX payment keys, WhatsApp or a Wi-Fi network. 100% in your browser.
Upload an image or use your device's camera to scan any QR Code instantly.
Reduce the size of JPEG, WebP and PNG images while keeping high visual quality. Without sending your files to external servers.
Drag and drop your image here or click to select
Supports JPG, JPEG, PNG, WebP (Max 25MB)Convert between WebP, PNG and JPEG formats instantly in your browser with no loss of resolution.
Select the image you want to convert
PNG, JPEG, WebP, GIF, BMPSet exact width and height for Instagram posts, YouTube banners or thumbnails.
Drag the image to resize
Find the HEX and RGB codes and the dominant harmonic palette of any photo or creative in 1 click.
Upload a photo or creative to extract the palette
Create custom direct links (wa.me) with a preset message for your Instagram bio or sales pages.
Generate tracking URLs with UTM parameters for Google Analytics, Meta Ads, TikTok and email campaigns.
Instantly calculate Return on Ad Spend (ROAS), Return on Investment (ROI), Net Profit and Profit Margin.
Remove invasive tracking parameters (fbclid, gclid, UTMs, igshid, si) and keep links clean, safe and neat to share.
Real-time count of words, characters with/without spaces, paragraphs and estimated reading time for copywriters.
Convert any phrase or variable instantly to camelCase, snake_case, kebab-case, PascalCase, CONSTANT_CASE and Title Case.
Paste a script or transcript and generate an .SRT file with timestamps ready for Premiere, CapCut or DaVinci Resolve.
Compare two versions of a text, contract, script or code and see exactly what was added, changed or removed.
Boost your discipline with the proven technique of 25 minutes of deep work and 5 minutes of break, with built-in sound alerts.
Generate armored passwords using the cryptographically secure number generator of the native window.crypto API.
Beautify, compact (minify) and validate the syntax of JSON code with the exact location of errors.
Choose a clip of the video (up to 10 s) and turn it into a GIF, or extract the audio as WAV. Nothing leaves your device.
Drag the video here or click to select
MP4, WebM or MOV (your browser must be able to play the video)Enter what you spent and what the ad delivered. The metrics update on their own; revenue is optional and turns on ROAS.
CPM = spend / impressions x 1000. CPC = spend / clicks. CTR = clicks / impressions. CPA = spend / conversions. ROAS = revenue / spend.
Type the post topic and pick the niche. You get a mixed set: hashtags from your words, from the niche and for reach, with no repeats.
Fill in name, niche, benefit and call to action. You get 3 versions ready to copy, with a character count (the Instagram bio allows 150).
Generates the Pix copy-and-paste code in the Brazilian Central Bank standard (BR Code) and the QR Code. Use it to charge on WhatsApp, on your site or in print. Nothing is sent to a server.
Paste the script and see how long it takes to say it, at three paces. Or enter the minutes you have and see how many words fit.
wpm = words per minute. Reels and TikTok usually sit between 150 and 170; classes and podcasts, between 120 and 140.
Answer what your site, store or app collects and generate the Privacy Policy (LGPD) or the Terms of Use. Copy it, download it as .txt or .html and review it before publishing.
Generic template, not legal advice: review it with whoever is responsible for the business and adjust it to what you actually do with the data.
QR Code for a link, Pix (copy and paste), WhatsApp and Wi-Fi, in high resolution, with no watermark.
Reads QR Codes with the camera or from an image, right in the browser.
Shrinks JPG, PNG and WebP with quality control and a before-and-after comparison.
Converts between JPG, PNG and WebP in seconds, without sending the file to a server.
Resizes by pixel or to Instagram, Stories, YouTube, Facebook, LinkedIn, X and Pinterest sizes.
Gets the palette and the dominant color of any image (HEX and RGB).
Cuts a clip of the video into a GIF, or extracts the audio as WAV, all in the browser.
Creates a wa.me link with number and ready message for your bio, ads and site.
Builds a URL with utm_source, medium, campaign, term and content for paid traffic.
Calculates return on investment and return on ad spend.
Ad metrics from spend, impressions, clicks and conversions.
Hashtags by niche and from your own words, ready for Instagram, TikTok and Reels.
Instagram and TikTok bios and sales, launch and engagement captions with your name and product.
Generates the Pix copy-and-paste code (BR Code) and the QR Code with key, name, amount and identifier.
Strips utm, fbclid, gclid and trackers from any link.
Counts characters, words, paragraphs and reading time; Instagram, X and SEO limits.
How long it takes to say a script (slow, normal, fast) and how many words fit in X minutes.
UPPERCASE, lowercase, Title, camelCase, snake_case and other formats.
Turns text into an SRT file with timings, for video and Reels.
Shows the differences between two texts, line by line.
Privacy policy (LGPD) and terms of use for a site, store or app, ready to copy.
Focus and break cycles with a sound alert, with nothing to install.
Strong random passwords with the length and characters you choose.
Formats, validates and minifies JSON, pointing out the error line.
Yes. No sign-up, no usage limit and no watermark. NinjaBR is funded by the AI tools Hub for subscribers.
No. The compressor, converter, resizer, color extractor, QR Code reader and video to GIF process everything in your browser; the file never leaves your device.
Yes. All the tools work in the mobile browser, including the QR Code reader with the camera.
Yes. The code follows the Central Bank BR Code standard, the same one banks use; paste it into your bank app to test before sharing it.
Yes. Send it on WhatsApp from the menu; the most requested ones come first.
These utilities are free and simple. The Hub brings together more than 80 AI tools (video, image, voice, text) for subscribers.
Need more? NinjaBR Hub has more than 80 AI tools for video, image, voice and text.
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