Developer Tools Smoke-Kawaii Gallery

Encoding, formatting, JSON, URL, and productivity utilities. This gallery connects each visual back to the page where it helps: tool images open the live utility, and guide images open the matching walkthrough.

These are approved Access Free Tools page images, not stock art. Each card keeps the original caption, image size, and link to the matching tool or guide page.

Tool page artwork

These images link to live tools with calculators, examples, FAQs, and result notes.

Illustration for API Pricing Calculator showing estimate API usage cost from request count, units per request, unit price, fees, and overhead.

Tool imageAPI Pricing CalculatorAPI Pricing Calculator artwork matches the live tool workflow: estimate API usage cost from request count, units per request, unit price, fees, and overhead. Use it with the calculator, examples, and result notes.

Smoke mascot timing a 5 GB file transfer at 100 Mbps with 400 seconds, 6 minutes 40 seconds, bits versus bytes, and Wi-Fi slowdown cards.

Tool imageBandwidth CalculatorBandwidth Calculator artwork matches the live workflow: enter data size and network speed, convert bytes to bits, estimate transfer time, and keep Wi-Fi, upload caps, server limits, and overhead in mind.

Smoke mascot encoding Hello tools into SGVsbG8gdG9vbHM= and decoding it back, with UTF-8 bytes, Base64 padding, and not-encryption warning cards.

Tool imageBase64 Encode / DecodeBase64 Encode / Decode artwork matches the live workflow: choose encode or decode, turn UTF-8 text into Base64, decode valid Base64 back to text, and remember it is not encryption.

Smoke mascot building a CSS clamp formula with 32px to 64px, 360px to 1280px, clamp(2rem, calc(1.217391rem + 3.478261vw), 4rem), slope, intercept, and middle-size cards.

Tool imageCSS Clamp CalculatorCSS Clamp Calculator artwork matches the live workflow: enter min and max sizes, viewport range, and root font size, then copy a clamp() formula with slope, intercept, and middle-size checks.

Illustration for Download Time Calculator showing estimate how long a file, game, backup, or update will take to download.

Tool imageDownload Time CalculatorDownload Time Calculator artwork matches the live tool workflow: estimate how long a file, game, backup, or update will take to download. Use it with the calculator, examples, and result notes.

Illustration for Hash Generator showing generate SHA-256, SHA-384, or SHA-512 text digests in hexadecimal format.

Tool imageHash GeneratorHash Generator artwork matches the live tool workflow: generate SHA-256, SHA-384, or SHA-512 text digests in hexadecimal format. Use it with the calculator, examples, and result notes.

Illustration for HTML Entity Encoder / Decoder showing encode HTML-sensitive characters or decode common named and numeric HTML entities.

Tool imageHTML Entity Encoder / DecoderHTML Entity Encoder / Decoder artwork matches the live tool workflow: encode HTML-sensitive characters or decode common named and numeric HTML entities. Use it with the calculator, examples, and result notes.

Illustration for Internet Speed Needs Calculator showing estimate a household or workspace internet speed need from simultaneous activities.

Tool imageInternet Speed Needs CalculatorInternet Speed Needs Calculator artwork matches the live tool workflow: estimate a household or workspace internet speed need from simultaneous activities. Use it with the calculator, examples, and result notes.

Illustration for JSON Formatter showing format and validate JSON with two-space indentation and optional sorted object keys.

Tool imageJSON FormatterJSON Formatter artwork matches the live tool workflow: format and validate JSON with two-space indentation and optional sorted object keys. Use it with the calculator, examples, and result notes.

Illustration for Password Generator showing generate strong random passwords with length, character sets, and ambiguity controls.

Tool imagePassword GeneratorPassword Generator artwork matches the live tool workflow: generate strong random passwords with length, character sets, and ambiguity controls. Use it with the calculator, examples, and result notes.

Illustration for Query String Parser showing parse URL query strings into JSON or build encoded query strings from key-value lines.

Tool imageQuery String ParserQuery String Parser artwork matches the live tool workflow: parse URL query strings into JSON or build encoded query strings from key-value lines. Use it with the calculator, examples, and result notes.

Illustration for Streaming Bitrate Calculator showing estimate stream or recording data use from bitrate, time, and stream count.

Tool imageStreaming Bitrate CalculatorStreaming Bitrate Calculator artwork matches the live tool workflow: estimate stream or recording data use from bitrate, time, and stream count. Use it with the calculator, examples, and result notes.

Illustration for Subnet Calculator showing calculate IPv4 CIDR network, broadcast, mask, wildcard, and usable host range.

Tool imageSubnet CalculatorSubnet Calculator artwork matches the live tool workflow: calculate IPv4 CIDR network, broadcast, mask, wildcard, and usable host range. Use it with the calculator, examples, and result notes.

Smoke mascot percent-encoding price=10&tax=2 into price%3D10%26tax%3D2 with %20 versus plus space and component-not-whole-URL warning cards.

Tool imageURL Encode / DecodeURL Encode / Decode artwork matches the live workflow: encode URL component values, decode percent-encoded text, compare %20 with plus spaces, and avoid full-URL or double-encoding mistakes.

Illustration for UTM Builder showing build campaign URLs with source, medium, campaign, content, and term parameters.

Tool imageUTM BuilderUTM Builder artwork matches the live tool workflow: build campaign URLs with source, medium, campaign, content, and term parameters. Use it with the calculator, examples, and result notes.

Illustration for UUID Generator showing generate UUID v4 identifiers with quantity, uppercase, and hyphen options.

Tool imageUUID GeneratorUUID Generator artwork matches the live tool workflow: generate UUID v4 identifiers with quantity, uppercase, and hyphen options. Use it with the calculator, examples, and result notes.

Guide page artwork

These images link to guides with inputs, examples, formulas, limits, and mistakes to avoid.

Guide image for API Pricing Calculator showing estimate API usage cost from request count, units per request, unit with example inputs and result notes.

Guide imageAPI Pricing CalculatorAPI Pricing Calculator guide artwork sits with the walkthrough for estimate API usage cost from request count, units per request, unit price, fees, and overhead, including inputs, examples, limits, and mistakes to check.

Smoke mascot explaining Bandwidth Calculator guide math with 5 GB, 100 Mbps, 40,000,000,000 bits, 400 seconds, 6 minutes 40 seconds, and Mbps versus MB/s cards.

Guide imageBandwidth CalculatorBandwidth Calculator guide artwork supports the walkthrough for file size, bandwidth, bytes-to-bits math, 5 GB at 100 Mbps, upload-speed checks, and real-world transfer slowdowns.

Smoke mascot explaining the Base64 guide with Hello tools, SGVsbG8gdG9vbHM=, Hi to SGk= padding, UTF-8 bytes, decode errors, and not-encryption cards.

Guide imageBase64 Encode / DecodeBase64 Encode / Decode guide artwork supports the walkthrough for UTF-8 bytes, Base64 6-bit groups, exact encode and decode examples, padding, invalid input, and why Base64 is not encryption.

Smoke mascot explaining CSS clamp guide math with 32px to 64px, 360px to 1280px, slope 3.478261vw, intercept 1.217391rem, and browser wrapping check cards.

Guide imageCSS Clamp CalculatorCSS Clamp Calculator guide artwork supports the walkthrough for fluid type math, rem conversion, viewport ranges, exact clamp examples, and real browser layout checks.

Guide image for Download Time Calculator showing estimate how long a file, game, backup, or update will take to download with example inputs and result notes.

Guide imageDownload Time CalculatorDownload Time Calculator guide artwork sits with the walkthrough for estimate how long a file, game, backup, or update will take to download, including inputs, examples, limits, and mistakes to check.

Guide image for Hash Generator showing generate SHA-256, SHA-384, or SHA-512 text digests in hexadecimal format with example inputs and result notes.

Guide imageHash GeneratorHash Generator guide artwork sits with the walkthrough for generate SHA-256, SHA-384, or SHA-512 text digests in hexadecimal format, including inputs, examples, limits, and mistakes to check.

Guide image for HTML Entity Encoder / Decoder showing encode HTML-sensitive characters or decode common named and numeric HTML with example inputs and result notes.

Guide imageHTML Entity Encoder / DecoderHTML Entity Encoder / Decoder guide artwork sits with the walkthrough for encode HTML-sensitive characters or decode common named and numeric HTML entities, including inputs, examples, limits, and mistakes to check.

Guide image for Internet Speed Needs Calculator showing estimate a household or workspace internet speed need from simultaneous with example inputs and result notes.

Guide imageInternet Speed Needs CalculatorInternet Speed Needs Calculator guide artwork sits with the walkthrough for estimate a household or workspace internet speed need from simultaneous activities, including inputs, examples, limits, and mistakes to check.

Guide image for JSON Formatter showing format and validate JSON with two-space indentation and optional sorted with example inputs and result notes.

Guide imageJSON FormatterJSON Formatter guide artwork sits with the walkthrough for format and validate JSON with two-space indentation and optional sorted object keys, including inputs, examples, limits, and mistakes to check.

Guide image for Password Generator showing generate strong random passwords with length, character sets, and with example inputs and result notes.

Guide imagePassword GeneratorPassword Generator guide artwork sits with the walkthrough for generate strong random passwords with length, character sets, and ambiguity controls, including inputs, examples, limits, and mistakes to check.

Guide image for Query String Parser showing parse URL query strings into JSON or build encoded query strings from with example inputs and result notes.

Guide imageQuery String ParserQuery String Parser guide artwork sits with the walkthrough for parse URL query strings into JSON or build encoded query strings from key-value lines, including inputs, examples, limits, and mistakes to check.

Guide image for Streaming Bitrate Calculator showing estimate stream or recording data use from bitrate, time, and stream with example inputs and result notes.

Guide imageStreaming Bitrate CalculatorStreaming Bitrate Calculator guide artwork sits with the walkthrough for estimate stream or recording data use from bitrate, time, and stream count, including inputs, examples, limits, and mistakes to check.

Guide image for Subnet Calculator showing calculate IPv4 CIDR network, broadcast, mask, wildcard, and usable host with example inputs and result notes.

Guide imageSubnet CalculatorSubnet Calculator guide artwork sits with the walkthrough for calculate IPv4 CIDR network, broadcast, mask, wildcard, and usable host range, including inputs, examples, limits, and mistakes to check.

Smoke mascot explaining the URL Encode / Decode guide with price=10&tax=2, price%3D10%26tax%3D2, %20 versus plus spaces, and whole-URL caution cards.

Guide imageURL Encode / DecodeURL Encode / Decode guide artwork supports the walkthrough for component values, percent triplets, %20 versus plus spaces, double-encoding, and full-URL mistakes.

Guide image for UTM Builder showing build campaign URLs with source, medium, campaign, content, and term with example inputs and result notes.

Guide imageUTM BuilderUTM Builder guide artwork sits with the walkthrough for build campaign URLs with source, medium, campaign, content, and term parameters, including inputs, examples, limits, and mistakes to check.

Guide image for UUID Generator showing generate UUID v4 identifiers with quantity, uppercase, and hyphen with example inputs and result notes.

Guide imageUUID GeneratorUUID Generator guide artwork sits with the walkthrough for generate UUID v4 identifiers with quantity, uppercase, and hyphen options, including inputs, examples, limits, and mistakes to check.

How the artwork connects to the tools

Each image includes a useful caption and a direct path to the tool or guide it was made for, so you can move from the artwork to the real task.

Developer Tools artwork is only useful when it matches the page job. A tool image should make the input, result, or setting easier to understand.

Guide images are for walkthrough context. They should support examples, formulas, mistakes, or limits instead of acting like random decoration.

Every card sends visitors back to the matching tool or guide page, so the image is connected to the thing it explains.

The gallery shows approved images that match real tools and guides. Draft or placeholder images stay out of the public gallery.