v0.2.0

Fixed

• Installed app failed to start on machines without the Windows App SDK runtime: the runtime is now bundled (self-contained), and CI verifies it is in the publish output
• .b2/.blake2/.blake2b hash files were treated as BLAKE2b-256, so normal b2sum (512-bit) files always reported a mismatch; the variant is now chosen by hash length
• SHA3 requirement corrected to Windows 11 24H2+ (was shown as 22H2+)
• Hash-file problems (no entry for the file, no hash entered, hash length not matching the algorithm) are reported before hashing starts instead of after reading the whole file
• Algorithm from a hash file is now applied (including .sha256sum/.sha512sum) instead of using whatever the dropdown showed
• A sidecar file containing a line for a different file is no longer used as if it were the hash for this file
• Window is sized to its content at the display DPI instead of using fixed heights, so nothing is clipped at 125–200% scaling or with long messages, and there is no dead space; it stays inside the work area when it grows to show a result
• Window opens on the monitor under the cursor instead of always the primary one
• Clipboard auto-fill ignores hex strings that cannot be a hash (e.g. 2026, deadbeef)
• Auto-detection no longer overrides an algorithm you picked when the hash length still fits it
• Cancel during hashing now stops the computation and keeps the window open instead of closing it
• Hash file picker now also lists .sha1 and .blake2b

Added

• Note listing the candidate algorithms when a pasted hash length is ambiguous (64 or 128 characters)
• BSD-style hash lines (sha256sum --tag: SHA256 (file) = hash) and backslash-escaped file names in hash files
• Tooltip on disabled SHA3 options

Changed

• Progress is reported about once per MiB instead of once per 64 KB chunk
• Files are opened with FileShare.ReadWrite | FileShare.Delete, so files that another program holds open can still be verified

v0.1.0

Added

• Right-click context menu integration for all files via "Show more options" → "Verify Checksum"
• Custom shield-checkmark icon in the context menu entry
• WinUI 3 popup window — centered on the primary display, always on top, with Mica backdrop on Windows 11 and Acrylic on Windows 10
• Streaming hash computation in 64 KB chunks — multi-GB files do not spike memory usage
• Supported algorithms: SHA-256, SHA-512, SHA3-256, SHA3-512, BLAKE3, BLAKE2b-256, BLAKE2b-512, MD5, SHA-1
• SHA3-256 and SHA3-512 require Windows 11 22H2+; options are disabled with a descriptive tooltip on Windows 10
• Real-time progress bar during computation, scaled to file size
• In-window result banner — green on match, red on mismatch; window stays open until explicitly closed
• Computed hash displayed inline on mismatch and automatically copied to clipboard, with a one-click copy button
• Cancel button to abort an in-progress computation
• Clipboard auto-fill on launch: detects hex strings and auto-selects the algorithm by hash length (32 chars → MD5, 40 → SHA-1, 64 → SHA-256, 128 → SHA-512)
• Algo-prefixed hash input support (e.g. sha256:abc123) — prefix is stripped and the matching algorithm is auto-selected
• Hash file verification against GNU coreutils format (<hash> <filename> text mode and <hash> *<filename> binary mode)
• Sidecar hash file support: .sha256, .sha512, .sha3-256, .sha3-512, .b2, .b3, .blake2, .blake3, .blake2b, .sha1, .md5, .sha256sum, .sha512sum
• File picker pre-filtered to all recognized hash file extensions; algorithm auto-selected from the file extension
• Inno Setup 7 installer — registers the context menu verb under HKLM\SOFTWARE\Classes\*\shell\ with a clean uninstaller
• SHA256SUMS file published with each release
• Unit test suite covering HashEngine, HashFileParser, and ClipboardDetector against real algorithm implementations
• GitHub Actions CI pipeline (build + test) on every push and pull request
• Build provenance attestation for release installers (verify with gh attestation verify)
• Installer now ships LICENSE and THIRD-PARTY-NOTICES.md with full third-party license texts
• CodeQL, dependency review and OpenSSF Scorecard workflows; SUPPORT.md
• Open source project files: contributing guide, code of conduct, security policy, third-party notices