345 free online tools

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Aligned FASTA whole-column trimming

Remove alignment columns using an explicit missing-character set and threshold, preserving every row, full header and complete original-to-output column map.

Aligned UTF-8 FASTA → FASTA / map JSON / CSV

Pack a portable local playlist

Bind local M3U references to selected originals, preserve repeated tracks and metadata, and download a complete relative-path ZIP with SHA256 reports.

Local extended M3U/M3U8 and selected media → Portable ZIP and complete reference SHA256 JSON/CSV

Compare typed registry exports

Compare two local .reg exports by ASCII key and typed value, preserving both complete snapshots, original SHA256 and every change in JSON/CSV.

Two V5.00 UTF-16LE BOM registry exports → Complete typed snapshots and changes JSON/CSV

Inspect supplied certificate signature links

Verify every exact-name RSA-SHA256 link in local PEM certificates, preserve full evidence, and order a uniquely connected supplied chain.

Certificate-only UTF-8 PEM bundles → Complete signature-link JSON/CSV and conditional ordered PEM

GenBank CDS declared-protein export

Select CDS features by a literal qualifier value and export their unique declared translations, retaining all feature statuses, qualifiers and original byte spans.

UTF-8 nucleic GenBank → FASTA / JSON / CSV / original

TMX language-pair and variant export

Export explicitly selected TMX language pairs to TSV while preserving all alternatives, metadata and mixed inline content in a complete report and exact original.

TMX 1.4, UTF-8 / UTF-16 BOM → TSV / JSON / original

Repair WAV length fields

Patch only the RIFF and data lengths of a confirmed final PCM recording, preserving every existing sample and prefix byte.

Unfinished classic PCM RIFF/WAVE → Original-size repaired WAV and full preservation JSON

Extract embedded ICC profiles

Recover exact ICC bytes from local JPEG, static PNG or ICC files and read every declared localized description without recoloring images.

JPEG, static PNG and ICC/ICM originals → Exact ICC exports plus complete JSON/CSV ZIP

HMMER result-table export

Export every HMMER3 protein-table hit with query and target accessions, original numeric tokens, free-text descriptions and exact source byte spans.

HMMER3 protein tblout / domtblout → JSON / CSV / original

MARC record-field export

Read raw ISO2709 records into complete ordered field/subfield JSON and long CSV, preserving Unicode, repeated tags, indicators and directory/value byte spans.

UTF-8 ISO2709 MARC bytes → JSON / CSV / original

Multilocus sequence-matrix builder

Join already aligned DNA FASTA loci by exact taxon ID and export a complete FASTA/NEXUS supermatrix, locus partitions, presence map and original sources.

Aligned DNA FASTA files → FASTA / NEXUS / CSV / JSON / originals

Neutral chemical-equation balancer

Balance explicitly declared neutral formulas with exact rational arithmetic, preserving the full element matrix, nullspace basis and conservation proof without guessing nonunique solutions.

Neutral formula equation → Balanced text / exact JSON / CSV / original

Inventory Windows shortcut declarations

Read stored paths, arguments and opaque components from local LNK originals and export a complete inventory without activating shortcuts.

Selected Windows Shell Link originals → Exact originals and complete declaration JSON/CSV ZIP

Edit TrueType font names

Rewrite explicit internal identities in a supported static TTF while preserving glyph and other table bytes and rebuilding checksums.

Unsigned static glyf/loca TrueType plus four explicit names → Edited TTF and complete name/table JSON/CSV

Formula composition and declared-weight mass

Count every repeated element in neutral formulas, then calculate each contribution and the total using a versioned weight table or your explicit decimal weights.

Neutral formulas / declared weight CSV → Exact JSON / CSV / originals

Extract MPO images

Recover every indexed JPEG view from a local MPO, preserving compressed originals, EXIF and full offset/SHA evidence.

One local JPEG-based MPO original → All-view JPEGs, exact original streams and complete JSON/CSV ZIP

Extract every ICO variant

Recover every stored ICO entry as an exact-payload single ICO and unscaled PNG, preserving equal-size variants, depth, order and full hashes.

One local ICO original → Every single ICO/PNG with original and complete JSON/CSV ZIP

Static font glyph SVG export

Select glyph IDs or code points from a supported static TrueType font and export SVGs with complete curve bounds plus a JSON report of names, declared metrics and mapping status.

Static TrueType TTF → SVG glyphs / JSON ZIP

Extract GIF display frames

Recover every composited GIF frame as full-grid PNG, with explicit background policy, raw delay/disposal and complete original/JSON/CSV ZIP.

One local GIF87a/89a original → Every full-grid PNG with original and complete JSON/CSV ZIP

Inspect native PE import declarations

Read direct and delay imports from local x86 PE32 or x64 PE32+ files, keep name/ordinal and source hashes, and export complete JSON plus formula-safe CSV in one ZIP.

Native PE32 / PE32+ → JSON + CSV ZIP