File Tools

Generate reviewed .env and .env.example files from pasted rows or a small text file, with duplicate checks, quote guidance, and masked secret previews.

Draft a repository-ready .gitignore with stack, OS, editor, secret, and exception rules, plus warnings for broad or duplicate patterns.

Check whether .gitignore rules cover generated and sensitive repository paths, with gate metrics for negations, tracked files, gaps, and review actions.

Estimate audio storage from PCM settings or encoded bitrate, with multitrack counts, media-fit checks, duration curves, and exports.

Draft DNS zone files from SOA, nameserver, mail, DNSSEC, and host records with TTL checks, ledger rows, and lint-ready exports.

Validate a DNS zone file before import, catching SOA/NS gaps, TTL risks, CNAME conflicts, mail-policy warnings, and normalized records.

Convert a DOCX in your browser to clean web, text, table, EPUB, and audit outputs with local processing, image controls, and package warnings.

Convert data transfer rates between bits, bytes, SI, and IEC units, model overhead, and test payload ETAs against a time window.

Inspect image EXIF locally, flag GPS, serial, timestamp, and author risks, then export a stripped or edited JPEG copy when supported.

Encrypt or decrypt a local file in your browser with AES-GCM, Argon2id/PBKDF2 controls, recovery metadata, and audit exports.

Hash a local file in your browser, compare SHA-2, SHA-3, MD5, SHA-1, or RIPEMD-160 digests, and export a session ledger for checks.

Estimate file transfer time from size and sustained bandwidth, then test overhead, compression, RTT, TCP window, packet loss, and deadline fit.

Convert file or disk sizes across decimal and IEC units, then estimate usable space, allocation slack, and common storage fit tiers.

Prepare images, Markdown, HTML, text, and Office-style files for PDF output with local preflight, layout warnings, and review exports.

Remove simple image backgrounds locally, tune color or edge masking, check warnings and coverage, and download a transparent PNG for photos or logos.

Compress an image in your browser, resize or reformat it, compare size and quality changes, and strip supported EXIF before download.

Crop an image in your browser, lock ratios or exact pixels, check upscaling and file-size risks, then export PNG, JPEG, or WebP.

Convert a single image locally into PNG, JPEG, WebP, AVIF, BMP, or ICO with resize controls, transparency handling, and byte-size warnings.

Strip image metadata in your browser, re-export a clean JPEG, PNG, or WebP, and compare privacy markers, GPS hints, size, and warnings.

Resize one image in your browser, compare fit, contain, cover, no-upscale, quality, and size-cap outcomes before downloading the file.

Encode one image to Base64 or a Data URI, preview the result, and check optimization, SVG alternatives, and inline-delivery size tradeoffs.

Extract text from scanned or text-native PDFs in your browser, with OCR fallback, confidence ledgers, page guards, and text downloads.

Compress one local file in your browser, pick ZIP, TAR, gzip, or Brotli output, and review size savings, split parts, and SHA-256 integrity.

Compress a PDF in your browser with a local rewrite, production-size estimates, and warnings for image-heavy, encrypted, or oversized files.

Merge local PDFs in the order you choose, verify accepted files, page totals, size limits, and metadata, then download one combined document.

Delete PDF pages in your browser, verify source-to-output renumbering, catch range or fidelity warnings, and download a cleaned copy.

Extract selected pages from a PDF in your browser, preserve typed order or remove repeats, and verify the new file with a manifest.

Reorder, rotate, extract, and split PDF pages in your browser with typed ranges, source ledgers, page-flow checks, and local downloads.

Add visible page numbers or watermarks to selected PDF pages, check range and placement warnings, and download a browser-created copy.

Add page numbers to a PDF in your browser, choose ranges and label styles, then check placement coordinates before downloading.

Reorder PDF pages in your browser with ranges, reverse or odd-even presets, duplicate handling, and a manifest for checking every output page.

Plan local PDF open and owner passwords, estimate entropy, map permission flags, and export redacted handoff notes for later encryption.

Protect a PDF in your browser with open and owner passwords, AES encryption choices, permission profiles, local scans, and verification checks.

Plan PDF redactions locally, scan selectable text for targets, flag hidden-data risks, and export handoff evidence before true removal.

Repair a damaged PDF locally, review parser and structure warnings, and download a normalized copy when pages can be rebuilt.

Rotate selected PDF pages in your browser, review page selectors and final orientations, and download a corrected copy without uploading the file.

Stamp a local PDF with a typed, drawn, or image signature mark, check placement and readiness, and download a visual-only signed copy.

Split one PDF in your browser into page ranges, one-page files, or fixed packets with overlap checks, a manifest, and ZIP output.

Unlock an approved PDF locally with a known open or owner password, check authorization and file evidence, then download a verified copy.

Add text watermarks to a PDF in your browser, choose exact pages, adjust opacity, rotation, position, or tiling, and download the marked copy.

Convert a PDF in your browser into text, rows, page images, slides, or document files with page-range checks and no server upload.

Split PEM bundles into certificates, CSRs, keys, and other BEGIN/END blocks with line spans, byte counts, and SHA-256 checks before export.

Convert PEM, DER, P7B, and PFX certificates in your browser, inspect chain expiry and key handling, and download the right artifact.

Convert TB, TiB, GB, and GiB through exact bytes, compare marketed drive labels with binary readouts, and write clear capacity notes.

Convert one Excel workbook sheet to CSV in your browser, choose delimiters and formula handling, and catch hidden-data or size warnings.